After being pressured by her classmates, Mitsuba goes with Futaba to buy a bra. Later, Nipples becomes attracted to the hamster design on Mitsuba's panties, making Hitoha jealous. Mitsuba gets into an argument with Miku Sugisaki over whose breasts are bigger, though ends up in an embarrassing situation. Soujirou is invited to the girls' parents day, though whilst trying to shave his beard to look less suspicious, he ends up shaving all his hair and looking even more suspicious. Mitsuba and Futaba get their essays about their respective feelings towards him mixed up, clashing with his expectations of them.
Mitsuba, Futaba, and Hitoha are not your typical Japanese students. Satoshi Yabe who's a newly hired teacher will have to learn to deal with these three girls as they terroize him or it will end up getting the best of him.
