Another work day done for the hardworking girls of IZ*ONE. They went home. Some dropped by the convenience store to buy some snacks before returning to their dorm. Chaeyeon and Nako returned with a bag full of snacks. They put it on the dining table and went to their rooms to change clothes. As soon as Chaeyeon entered her room, she noticed something on her bed. A t-shirt neatly folded with a post-it attached to it, something familiar. She took it and read what's written.

"To: My Jealous Bestfriend
       
       It's been 500 days since IZ*ONE's debut. I still feel the same, I'm            glad that we got to debut together. 

      Wear this. It's our couple t-shirt. Only you and I have it. ☺

      P.S. Don't be jealous, Jjaeyeon-ah...

From: Saku-chan"

Chaeyeon took the post-it and sat on the bed. She looked at the t-shirt then smiled. She remembered the t-shirt that Sakura gave the members last time, it's similar. This time, Sakura drew just the two of them plus a cherry blossom and a feather. Chaeyeon started to become emotional again. She put her head down holding on to the t-shirt tightly. Without her knowing, Sakura was just outside looking after her. When she gathered herself, she changed into the shirt Sakura gave before going out of her room. She immediately looked for Sakura so she went to her bestfriend's room. Only Nako was there. Chaeyeon was about to head out to go to