Kusakabe Yuki overhears some girls saying mean things about her. Gossip is not an uncommon problem among high school girls, but Yuki is particularly worried that it's happening because she's a demi. Tetsuo is sympathetic to thr concern and makes up his mind that, as her teacher, he must protect her. Hikari, a fellow demi, feels the same way.
As a fellow demi, you're out to avenge her?
إنّها ديمي مثلك، فهل أتيتِ لتثأري لها؟
¿Quieres vengar a tu amiga demi?
¿Quieres vengar a tu amiga demi?
On se serre les coudes,
entre demi ? Impressionnant…
Uma demi em busca 
de vingar a outra amiguinha?
Решила вступиться за другую деми?