Teacher and Student

Maya Yamada is Chifuyu's assistant teacher at IS academy. What is not known is she was Ichika's girlfriend before he went to the academy. Both are adamant on keeping the heat on high in the relationship, though secretively. But when Chifuyu and the harem finds out, they go ahead and show the relationship publicly, raising a stink bad enough to kill someone who cleans portable toilets. Oh and the harem along with Chifuyu go yandere.