It's a very rainy, windy day. Tomoko forgets her textbook, but she can't bring herself to ask the boy next to her to let her see his, and she doesn't have friends in other classes to borrow one from. She tries to erase her presence and go unnoticed, but the teacher spots her easily. Ruing her luck, Tomoko starts home in the rain, but another tragedy awaits as she stands over a flooded channel, watching the water lapping at the bottom of the bridge...

Tomoko's mother tells her that her middle-school-aged cousin Kii-chan is coming to visit. Since Tomoko always acted the role of a smart, popular girl in front of Kii-chan in the past, she starts to think up ways to keep her cousin from finding out that her stories about her boyfriend were all lies.