When the matter of exchanging bodies happens, even the best students at Hogwarts will feel uncomfortable. Especially Irene Bae, now the Ravenclaw student, who focused on the magic theoretical research.

First of all, Irene found herself moving legs to seem to send a longer distance, followed by the smell of the incomparable familiar floral and woody fragrance. This smell filled the entire bed, and the rich aroma made her a little dizzy. When she looked up, it was the eponymous perfume "Joy" that she had given to Park Soo-young, and it was just sitting on the bed. The bunny is sleeping soundly, just like last night's Irene, who entered Sooyoung's body unconsciously, without any trace of pain or resistance.

The Ravenclaw hadn't thought that her gift had been given to such a great extent in the hands of the Slytherin, and to her surprise she found an "Introduction to Basic Magic" tucked away in the far corner, a textbook that Sooyoung had pestered her to borrow for the remedial magic theory class that she had learned so poorly, with her handwritten annotations on it. When she pulled out the book, a large fluorescent green heart and cross symbol was displayed on the cover. It seems that Sooyoung has no intention to return the book to her, she sneers in his heart.

When she washed up and looked in the mirror, She couldn't help but marvel at Joy's beauty.

She went down the steps soaked with the smell of potions to the common room and met the boy who always pestered Joy in the usual way. The young boy greeted her with youth and energy, but unfortunately she never remembered his name from the beginning to the end. "Joy nuna, morning wow!"

So energetic, he should have been assigned to Gryffindor instead of the gloomy and cunning Slytherin. Joohyun now squeezed out a fake smile as a gesture of politeness, or were Joy's friends as jumpy as she was?

"Joy," seeing her glancing around unaccustomedly, Seulgi stepped forward to relieve and distract her. "How about the newly changed furnishings? To celebrate the birth of the little snake, the entire academy has been changed with decorations related to it. This is the first time in 70 years that a new black mamba has been successfully hatched. The student council has been very busy with this."

Seulgi is from the Ravenclaw. Her single eyelid fits the temperament of a python, with danger and indifference, but as for herself, she looks completely different again, with a silly smile that looks like she's another Slytherin who doesn't fit the stereotype.

"This is the first time I've seen the inside of the snake yard up close." Staring at the large triangular eyes glowing with cold light on the purple satin, she shivered. "For the sake of mental health, I think I should withdraw my sight."

"It's been said that your single-mindedness is all on Ravenclaw's senior, so how would you normally be in the mood to study the furnishings inside your own academy." Seulgi's laugh had an unspoken meaning as she fiddled with her robe, pulling two silk wristbands embroidered with Black Mamba from the inside of her wide cuffs.

She showed Joohyun now how it would look when she put it on. From the moment they were fastened the embroidered snakes were brought to life by magic, crawling slowly along her wrists, their cores stuttering with a hissing sound. "This is the invitations to the academy's celebration party."

Irene almost jumped up in horror, she immediately backed up and distanced herself from her.

"Put it away...put it away now!"

Seulgi frowned in confusion. "What are you talking about? You're the one who's most excited about this. Who is excited about something like this that can be used as an opportunity to poke fun at someone? I don't seem to recognize you after not seeing you for a day."

Joohyun's eyebrows twitched. She carefully took the wristbands from her hand and put them into her own spatial storage ring. She suddenly realized that Sooyoung's storage ring was exactly the same as her own, so she could run spatial magic unimpeded.

"You gave me two invitations, who is the other one for?"

The scrutinizing gaze swept up and down the whole body, and the Ravenclaw in the Slytherin body was sized up for a moment.

Seulgi showed a kind smile. "I can't tell you too much right now. Soon she will come to you."

"You ......" Joohyun was about to speak now, "Do you know that from today magic potion class is going to be with Ravenclaw?" She interrupted her.

Of course I know!

"Come on, let's go to class together."

***

Magic class was not Joohyun's best subject.

When the crucible in front of her gurgled with the smell of ichor mixed with rotten berries, she now knew that she must have failed again. She had a strange talent in this, although she could not make the right magic potion, but the wrong flavor can be distinguished with just a glance.

Putting up with the pungent smell and the strange looks from teachers and classmates wasn't actually the worst thing now, it was the endless noise and taunts from people around her with identical faces but not her own.

Sooyoung's Potions practice was done very quickly and smoothly, even so well that the professor added five points to Ravenclaw for it.

The optical imaging display of Joohyun now put his face to the nominal Slytherin's ear, enjoying the crowd's astonished look at the intimate interaction between the two, whispering, "What's wrong with the top student in the magic potions class, needing after-school tutoring from the head of the grade himself?"

Joohyun presently gave her an angry look and she cringed when she saw it was her face. "Shut up, Park Soo-young."

***

Why should she, a Ravenclaw studying magic theory, engage in such a lowly do-it-yourself magic potion class that would inevitably lead to a mess? Did she need to work this hard just to secure her seat as head of the class? She kept asking herself and cursing Ravenclaw's course selection system: candidates for Headship needed to take at least one course in each major category.

She continued to struggle with her potions practice after class in a defiant manner, and when her hand shook for the 101st time and the golden lizard powder fell incorrectly, causing a large chunk of dust to float directly onto the fire and cause the crucible to explode, she received a kind reminder from the classroom with a safety feedback mechanism, by way of a note floating from the sky.

"Miss Joy, given the degree of destruction your actions have brought to the public property of Hogwarts, I suggest that you perhaps engage in some other activities; if you wish to continue to persist in your untalented practice without the guidance of someone of higher rank, we will regretfully issue you some warnings and deduct Slytherin's as appropriate and appropriate points.

P.S. The Slytherin celebration welcomes you."

This is a disgrace!

She heard the smug laughter at the door. No matter which part of Merlin's body was used to think, one could conclude in half a second that it was Sooyoung.

Joohyun presently thought that Sooyoung would not let go of this opportunity to come in and mock her profusely, but surprisingly her own figure did not appear, only two sound bubbles floating into the classroom.

"Hyun, why haven't you gone to eat yet! Take care of yourself!"

BJoohyun burst out laughing. She poked open another bubble.

"Not worried about you, I'm only concerned about my beauty! Whoever uses my body don't ever try to destroy it by using the trick of not eating!"

***

The break after the meal was a time for the owls to deliver the mail en masse. All kinds of messengers poured into the lobby and "swooped" down to drop packages.

Joohyun was sleeping on the table (affecting Sooyoung's image anyway) when a square box-shaped package hit her right in the head.

"Oops!"

"Hey hey hey, that's mine!" Before it could be held firmly in the hand, it was snatched away by the rushing Slytherin, and she now glanced at the package, which had the prismatic logo of a cross, with thorns and snakes hovering over it.

"Can you control your owl's manner? it's really look exactly like the master."

She now pointed across the air at the messenger whose body was covered with dark brown feathers, and the little guy circled the air a few times excitedly, feeling immensely proud of his amazing hit rate.

"Come on, this is a private family communication letter, okay? of course it can't fall into your hands. We've known each other for so long and you can't even recognize my family tattoo." Sooyoung gave a love heart to the air, however, the little owl did not have the ability to identify who was the inside one, it simply ignored the big bad guy who just snatched his master's package, disdainfully waved his head and flew straight out of the lounge, without looking back again.

I don't care about the things between you guys.

Sooyoung cursed this little thing in silent for being so heartless, but was still tough: "envious that I have such a good and precious friendship with the messenger?"

"'Precious friendship' is affecting my sleep."

Sooyoung was amazed. "What are you talking about? in fact you didn't sleep at all, right? I saw you clearly all through the noon, first in the classroom frantically performing failed magic potion practice exercises, then tragically missing lunch time, and now here you are relieving your unbearably hungry stomach by pretending to sleep. Why else would you use your hand to press your stomach? I don't believe you can sleep in this position."

"......you are really some kind of stalker, Sooyoung."

"Hey hey, my body and face is the capital, I must supervise the user to take it seriously."

She handed a sandwich to Joohyun that had just been heated with magic. "Here, sandwich, take it."

Joohyun took it and examined the green and pink hearts attached to the package. "Thanks." She really likes things from the muggle world, Joohyun thought.

Sooyoung waved goodbye to her.

Then later when she opened this sandwich, she suddenly realized that the two heart-shaped stickers actually had an ulterior motive: to block the mustard and basil in the sandwich.

And both do have some kind of impactful flavor.

Well, Park Soo-young.

***

"So, Joy unnie, what are you going to do now? As you know, once you use the secret spell of family body exchange, the initiative of things is out of your hands. There is no such thing as 'expediency'. If you can't be sure of Joohyun's feelings for you, you will suffer in pain for the rest of your life. It's a full or null game, you either win or you lose." A blonde haired girl crossed her arms and sat on the sofa in the lounge, facing her seriously.

"Besides, I think the only way to win her favor is to honestly confess everything to her, as well as apologize for that prank."

"Oh ...... Joohyun, she hasn't been paying attention to me this whole week!" She said in frustration. "Our non-overlapping course notes were sent to her by Seulgi!"

She defended herself. "Basil has a weird taste, but it's healthy! I even chose a low-fat sauce for her!"

"But you mixed in a whole two tubes of mustard sauce." Yeri ignored her words and mercilessly demolished her evasive language tricks.

"Super, super mini two tubes, okay? And it's mild! I bet that's not even as much as a spoonful of SUBWAY's overflowing egg mixture."

Yeri frowned. "So - you really did sneak off to the muggle world again, didn't you? You know that your parents hate muggles and everything related to muggles."

"Hey! A Seb's metaphor doesn't mean anything!" She threw up her hands in protest and was greeted with a sharp, skeptical look from the Gryffindor. Sooyoung's aura instantly softened, like a puppy that ran into the street with gusto to grab something but got caught in the rain.

"But, but, I really just want to learn more about the world she grew up in ...... and humans, no, muggles, I have to say some of their stuff is really good ...... "

"Uh huh. Those stickers ......"

"And nice to look at! Compared to the whole drab, supposedly historic furnishings at home, the Muggle world stuff is just ...... wow, brings a ...... completely different, new glow to my world. Hogwarts colors are great too, but 'decent' is still very important to us."

"It's not a 'free' feeling."

"Sometimes I just feel ...... as if the huge family in the so-called magic world brings me nothing but a heavy burden."

Yeri leaned closer and ran her hand up her hair, "Unnie, sometimes I'd rather wish I was the one under the spell instead of an onlooker on the sidelines of the family who could only watch in silence as you endured it all."

"It's okay. Every child in the Park family goes through this. It's ironic, isn't it? The ancient, closed, xenophobic family is cursed to be ually so open."

"I should really be glad that I was the last one to have to go through this curse."

"Although it's spoiling the mood, I'd like to say that it's really weird to say these comforting words to Joohyun's body! the person with the addiction is not her! 

Park Soo Young screamed. "Stop it! Stop! How can you say that so directly!"

Yeri spat out her tongue. "Do you still have desire in her body?"

"Not even this week." Sooyoung gave a truthful account.

"What about Joohyun in your body?"

"There won't be either. Otherwise, I think she would have rushed over and killed me."

"Wow. That's pretty humane."

"Hey, whose side are you on!"

"Of course I'm YOUR friend~" Yerim winked mischievously at her. "Do you want to know where you can find her?"

***

Joohyun now closed the heavy spruce wood door of the professor’s office in frustration.

This was already the second visit after her body was exchanged.

After a full week of waiting, the assistant told her with an apologetic face that the senior pharmacy professor's international magical cooperation trip would still last for a full week.

She turned around to leave, but saw a girl in maroon robes standing there in the corridor, her long golden hair shining brightly like the sun.

As soon as the girl saw her, it was like someone who hadn't had a drink of water for three days had touched a drop of water for the first time. She flew to the corner of the corridor, tugging a beautiful girl with a blue collar and dragging her out of the corner.

Miraculously, this student, as beautiful as a Greek goddess, looked exactly like her! Although her posture ...... was a bit lopsided.

No, no, no, this is definitely not an episode of some psychic show. It's just ......

"There you are!"

The girl screamed frantically, "Don't move!"

She turned her head again to the beautiful young girl and growled, "Sooyoung Unnie! Come on!!!"

......a Gryffindor threatened the vicious and cunning Slytherin, forcing the nerdy Ravenclaw, who was never in motion, to confront him.

Joohyun is now shocked at the scene in front of her, the inner jaws are going to be shocked off.

As if she didn't see her reaction, Yeri pressed herself against Sooyoung's ear and whispered.

"I'm right, right! She will definitely come here again today to ask about shapeshifting, and I've been following it for seven days. Come on, say what you're prepared to say."

"It's advanced potionology. " Joohyun now corrected her words.

Joohyun's hearing was as good as ever, and Sooyoung smiled dryly. "I'm sorry ...... did the mustard sandwich last time upset your stomach? I swear, this sandwich tastes good and this mustard sauce is also my favorite flavor, but putting them together it does feel overwhelming for a while." After saying that, she stole a glance at her unmoved expression.

"Aren't you going to explain about this girl first?" Joohyun now asked coldly.

Yeri volunteered to come forward and introduce herself. "well, I'm Kim Ye-Lin, a newly enrolled Gryffindor, as you can see; as for why I know this Slytherin who is much older than me, because--"

"I am a Cupid, here to create chemistry between you!"

Hey! What the hell she’s talking about!

Sooyoung became a little flustered because she never dared to make such a joke in front of her, so she quickly went up to explain. "Yerim is my childhood friend. She thinks that what I did last time was incorrect, so she made sure to ask me to apologize."

Joohyun now just raised his eyebrows. "I'm not getting angry over last time."

"Really?" Sooyoung thought that Joohyun was now refusing to communicate with her by lying. "Then why have you been so cold to me and ignoring me all week. Including now."

"Sooyoung, why do you care?" Joohyun asked rhetorically. "Isn't this the result you want?"

"I ......" Sooyoung froze. It's not like that.

"I am busy. I still need to take care of Ravenclaw student work matters." Joohyun now did not mention the more important matter that lay between the two. Since Sooyoung didn't want to give a response, using pointed questions to force her to reply was clearly not a wise move. "The responsibility under the status always has to be borne by someone."

Joohyun doesn't like to push her to the edge.

"If there's nothing else you need to tell me, then I'll leave first." She said finally.

Sooyoung's heart was smashed into powder by this polite and courteous attitude of Joohyun. She was all too familiar with the feeling that whenever she received such an evasive message, she felt she had done something wrong or let someone down.

She tilted her head, never feeling so huge.

"Invitations to the celebration, the celebration ......," she stammered, pointing to her wrist. She had learned the news on the day Seulgi gave Joohyun the two invitations. For the reasons in the above story, she had been afraid to approach Joohyun, and there was no right time to do so, and she couldn't miss this last chance. "Are you going to go?"

"You will go, right. You know that, as a Slytheri