Rikka-chan, the school's idol and class president, reveals her secret to the teacher. Instead of keeping it to herself, I ended up hearing everything I said! Moreover, the health teacher got involved, under the guise of a health check-up, various toys were used to blame the chestnuts and butt holes. Rikka-chan is still alive while her body convulses. In the end, it blows up into a tide!