告白してないのに振ってきた学校一の美少女と同居することになったんだけど、その姉妹全員が俺の童貞を狙ってくるってどういうことだよ (Associated Names)

One day, Nazuna Haimiya found a love letter in his shoe-box, who appears to have a lonely and lifeless gaze. Half in disbelief, Nazuna responds to the invitation and makes his way to the back of the school building. There, he encounters Akane Hiiragi, the most beautiful girl in the school. Upon seeing Nazuna’s face,…