Ms. Shimizu invites herself for a stay-over at Hideki's for some interesting games. Meanwhile, there seems to be more going on when the ever-joyful Shinbo appears to be depressed and won't talk about it. And as Hideki and Chi assist Hibiya cleaning the apartments, Hibiya reveals a startling fact about her past. What can Hideki do to help everyone and still study for his exams? Will he ever find time to eat?