I Think There is A Situation Here

"Why? Big Brother is big brother and if you two are close to them isn't he also my big brother…?" Rika asked. 

"T-That-" He sneered at me but not for long since her little sister was looking at him. He can't let her sister see him at the moment. But I don't mind taking all sorts of frustrations I got from him. So don't mind me if I step out of my boundaries. 

"Yes, President… How come you are denying the fact that we are close? Your sister is my sister as well, right?" I bowed down and extended my palm to make a fist sort of thing. In response to it, Rika bumped her fist to mine and looked at her big brother.