Amamiya was Yuzu Aihara and Mei Aihara's post-homeroom teacher as well as Mei's fiancée. He was a teacher at Aihara Academy, but was kicked out of the school after Yuzu revealed his sexual advances on a student.
Amamiya's ex-fiancée, it's hinted that he randomly forced her to kiss him, but she didn't mind it.
One of Amamiya's former students. She was the one that found out about his relationship with Mei and called him out on his tricks.
Amamiya's former boss. Little is known about their relationship.
As only what Amamiya said to her was heard, nothing is known about his lover.
- "Amamiya" (雨宮?) means "rainy palace".