You're in 9th grade now and kei was your enemy since 7th grade

It's Saturday now and your parents are out of town, while eating with your brother (Yamaguchi), he said that his friends we're coming over later so you better behave yourself, but you just roll your eyes,

A few minutes later, you heard a knock on the door and you called your brother to open it because you're too lazy to do it, after your brother opened the door, your brother said "they're here, get off the couch" and you saw kei!