Chiharu Hiiragi repeated a year and is struggling to fit in with his class. While taking remedial chemistry in the infirmary, the person sitting next to him turns out to be a super shy classmate covered in a bedsheet. Wearing a ghost-like sheet, her face is hidden, and her conversations are awkward. Yet, for some reason, being with her feels comforting. Things about their age, about school, and the secrets they can't quite put into words... As they slowly share more conversations, their time after school begins to change. A slightly awkward, a little off-beat, passing-grade and clumsy after-school youth comedy starting from the infirmary, begins!