Before the summer vacation: Seohyun is a quite shy, small and insecure girl. She doesn’t like to be in the spotlight at all. She only has a few friends, because the others just go talk behind her back. Her bestfriend is Yoona. They’re both not popular. Krystal, is a small, popular girl. She can be rude sometimes, but she doesn’t care at all. All boys lie on her feet. Sehun is just like Krystal. He’s small and popular too. And he’s rude too, but also funny. All the main characters are small, yes, so Luhan’s small too. He has a disease and only attends school for two hours each day. He wants to be treated like everyone treats all the other people. He doesn’t want to be seen as ‘The guy with that disease’.

During the summer vacation: Seohyun decides to change into a better person. She changes her fashion style completely, just to look mature for 9^th grade. She just wants to be accepted by people in the next schoolyear. Sehun doesn’t want to be rude anymore. He wants to be nice, so that more people can like him. Luhan decides to make something of his life, while Krystal still stays the same as before the summer vacation.

"I want someone to finally accept and fully love me. I don't care that I'm 'too young' for this." - Seohyun

"I may be rude, but I'm actually kinda... sweet if you're a good friend of mine." - Krystal

"I don't want to be seen as 'the guy who had cancer and has a disease'. I'm a person. I'm just me." - Luhan

"The reason why I try to be funny 24/7 is because I want to feel like I belong with you guys." - Sehun