A few months ago, your older sister started dating a really nice guy. He was a great guy, and whenever he came over to hang out with your sister, he would bring you chocolate or some other sweet treat. Not to mention, he was really sweet to your sister, so you were super happy for her. But for some reason, your parents wouldn't let her go to his house.

Until one day they let her, but they said she would have to take you with her. You complained a lot, saying you didn't want to be a third wheel. Your sister said he had a brother your age, which reassured you a little, so reluctantly you agreed to go. When the two of you arrived at Akiteru's house, he greeted your sister with a hug and a kiss. He then saw the pouty expression on your face, which made him chuckle. He said that his brother was home, and pointed to where his room was.

You nodded and walked over there timidly. You knocked on the door and heard a familiar voice telling you to come in. And when you opened the door, there he was, Kei. The boy you had gone to detention with this morning at school, all because of a silly argument about a subject you both didn't even remember. You two were always bickering with each other, and many people said that you were like an old married couple.

The two of you might like each other, but you always acted like you hated each other. You stood there in shock, how could your sister be dating Kei's older brother? You stood there, dying of embarrassment and not knowing what to do, until Kei finally spoke up.

"What the hell are you doing here, dumbass?"

Kei was lying on his bed leaning against the headboard while reading a book. He closed the book and put it aside, looking at you with his usual expression, but with a hint of confusion in it.