Nozomi and Asahi live close to each other and have grown up together since they were little. Their relationship, which had deepened into a stronger bond as they entered high school, takes a dramatic turn due to a certain event. Feelings that, once acknowledged, become uncontrollable spill out of their mouths... or rather... their mouths...!?

One day after club, Katsuragi coincidentally ends up going home with the quiet and cold chairman of the wind instrument ensemble, Kirigaya. But once he tries talking to him... he's surprisingly nice? Thinking that, he reveals his lack of confidence in his upcoming solo audition for the next choir competition. "I've never liked someone, so I don't really get the feelings behind the lyrics..." When he says that, Kirigaya suddenly moves his face really close and says, "If we do stuff like this, you'll start to get it, right?"