I Rely on Barrages to Steal Scenes in Sadistic Stories

A Short Piece of Abuse, Very, Very Sad

The book roughly ends with the death of the heroine. After that, the hero realizes that he loves the heroine very much, and then he has been on the road to find a wife. After that, he met someone who looked very similar to the heroine, and he got together with her. The summary is: abuse!