Tsujido Ei, a flower arranger,is struggling living with his step-brother, Natsuki, who he has strong feelings for.But trying to be the "Good Younger Brother" is starting to become harder as Natsuki keeps increasing his skinship.All of the sudden, Natsuki wearing only underwear, hugs me and he smells amazing..."As your older brother, I'll take the responsibility of protecting you...", wait is this a delusion?!A love comedy that makes the family relationship go crazy!!