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, Akane bluntly declares, “Sorry, but I can’t date you,” and leaves. Nazuna dismisses the encounter as a bad dream. However, for some reason, the two end up living together from the next day onwards. To make matters more interesting, Akane has five equally beautiful sisters. With no other place to go, Nazuna desperately tries to get along with them. The sisters gradually find themselves drawn to Nazuna. However, they all share a secret that cannot be revealed to anyone, and Akane, in order to protect that secret, plots to drive Nazuna away. Get ready for a delightful and entertaining romantic comedy with these unusual sisters! The fun begins here!