Aishuu no Kanon
Bout man in love with a noble girl. They had planned to elope, however the girl never arrived, believing that he was betrayed, he set out for revenge after the girl had died. His target was the girl's son.
The Tycoon's Pregnant Mistress (The Anetakis Tycoons Book 1)
Disgusting couple that shouldn't have been together so easily again after all the mistrust that was in the relationship as well as the trauma and sadness the woman went through without a heartfelt appology or self-relfection on the partner's part. Only reason this is kept is because it features psychological, amnesia and mental trauma.
Ouji No Hakoniwa