I'm glad the ending is different from the novel. In the novel version, Sakura and her mother were saved by her boyfriend but after that it's twist to badend, Mother kidnap Sakura to offer themself to Hyuga group from "囚われた人妻捜査官 聖実 肛虐魔薬調教" The yakuza group tha produce the prototype of the drug in this story. However, I liked both ending.