A few seconds ago, Minori was just another guy, but then something happened to him...! Minori feels like a loser because his childhood friend, Haruka, who's also his girlfriend, won't let him go all the way. It was just another ordinary day, when Minori suddenly finds himself in a girl's body...! Haruka's twin brother, Kanata, who Minori hasn't talked to in a while, is the first one who sees Minori in this new body... And Kanata is very curious... Kanata's had feelings for Minori for a long time (even though his sister's dating him) and now that Minori's a girl, what's going to happen to their relationship...? A naughty story about a boy whose relationship with the twins becomes a little complicated because of his transformation