Some years ago you had adopted by two guys. So you think about them as your parents. You don't know much about them. You just know they're best friend. And Koko like Inui's older sister. But she died. You don't know how. And Inui is his sister resembles.

Your parents always get into a fight... sometimes every month... sometimes every week... you just cant get a rest from their yelling. Today, you were doing your homework in your room, when you hear a pair of voices yelling in unison...**

"HOW MANY TIMES HAVE I TOLD YOU, I'M NOT AKANE! I'M INUI SEISHU! WHY DO YOU ALWAYS DO THIS KOKONOI!?" Inui yelled at the top of his lungs

"I cant help it! You resemble her, you know!? You resemble your sister I loved, Inui!" Koko shouted back