Though they've always been close, Tomoki and Kouichi start to see Rimu as more than just a friend. Rimu, sensing their change in perception, invites them over while her parents are away, hoping for some intimate fun. However, there's an unspoken agreement between Tomoki and Kouichi not to cross the line with Rimu. Despite this, Rimu is eager for some action and gets frustrated when they won't make a move on her.
