Tachibana Miyuki

The protagonist's stepmother. She is a well-bred "young lady" type mother. After the death of her husband, in her moment of weaknes is forced into an immoral relationship with the protagonist.

She comes from a good family and is gentle and honest, but also quiet and timid. Because she is his stepmother, she is somewhat reserved towards him. She tends to be dependent on others who are decisive and dynamic, whether because of her good upbringing or because of her natural timidity. There is a part of her that is dependent on the protagonist who tries to dominate her.