Yoyohara, a beautiful girl who suddenly enters the class of a male high school student Haruhiko. What's more, she becomes a cohabitant of Haruhiko's house. The perfect honey trap from an unidentified sexy invader! Haruhiko, a stubborn boy, countered it with his own pedantic quibble, but in the end he was always "thankful". A strange communal life moves toward the critical point, with a disturbing atmosphere and mystery. A new sense of love comedy that mixes little eroticism and mystery.