Yuri Project
joined Jul 14, 2016
A basic synopsis would be this:
Shio's mother is pregnant. She is forced into marriage with her abusive boyfriend. She breaks down. It's implied she was raped by him again after giving birth to Asahi.
So yeah, it's pretty miserable.
And Suu is Satou's friend from way way back when it's revealed she's a yandere for Satou. Satou had to seduce her to keep her from prying into her personal life and it breaks Satou.
I'd correct and expand your synopsis like this: Shio's mother is raped by a stranger while in high school. She gets pregnant. Eventually she tells her parents, and they confront the guy and his father. At the urging of his father, her parents pressure her into getting married to him. Her parents and father-in-law want to avoid any scandal, and the father-in-law, who is wealthy, pays for her to live by herself. Her parents barely talk to her for years. It gets worse after that.
Also, seducing Suu wasn't what "broke" Satou. Saying "I love you" to Suu upset her enough that she felt the need to wash her mouth out afterwards ("such a filthy lie"), but what "broke" her was that when she got home, Shio was in a bad condition. Satou, being Satou, thought that this was divine punishment for her telling Suu she loved her, though it was actually a result of something completely unrelated.