Marchmi was in the dorms before Katsu was. As Marchmi looks around she laughs. The dorm walls was a weird tan color. Katsu was right Behind Marchmi, as Katsu looks around she gets disgusted "ew. This color is bleh." Is all Katsu says, walking past Marchmi going to the right side of the room. She pulls out all her stuff while Marchmi throws hers on the bed. "Hey brownie, I hope you don't have any neon colors cause that would really clash with my dark colors." Marchmi says with a sarcastic tone in her voice. "For your information I have dark colors too. And stop calling me brownie! Your shorter than me!" Katsu exclaims, red in the face. Katsu was right. Marchmi was only 5'6 when Katsu was 5'8. "Listen I'm going for a walk so do you wanna join me?" Katsu asks, trying to be nice. Marchmi looks at her then rolls her eyes. Katsu chuckles and walks out the door.
(P.S. Katsu and the twins known each other since kids but Marchmi doesn't remember. Katsu and Todoroki still are friends.)