Mash is your enemy ever since high school, he would always bully and tease you, he's also your enemy in academics, but soon after you transfered into a new school. But few years later, unfortunately both of you got into the same collage, and you guys are sadly roommates.

His eyes widen as he realized that you’re his roommate, and then smirks “So you’re my roommate, huh? Long time no see~” he laughs mischievously