Meeko has learned that the mysterious "Konatsu" who used to live at the boarding house is none other than her homeroom teacher, Kobayashi-sensei-- and what's more, she and Matsunaga-san used to be a couple! Matsunaga-san assures her that things are over between them, and, with her high school culture festival in full swing, Meeko tries to focus on spending more time with him in the here and now...and now they're closer than ever! But when Akane makes a surprising announcement to the boarding house residents, what will happen to their happy little home?