After Stealing Hero's Mother, I Reincarnated in the Fantasy World!

[Warning! Contains sex scenes, lemons and perverted MC. Read at your own risk.]Rain, a typical young master, led a fine life, enjoying power and status.But once confronted by the hero, Rain suffered a crushing defeat. Unable to accept this reality, he continued to confront him, not knowing that he was doomed to defeat from the start.Eventually, when Rain had lost everything he held dear and was in the depths of despair, the fog in his head cleared and he realized. "What the fuck am I doing?""Why am I not using my brain and d*ck to defeat the hero?After that, Rain found his own way to crush the hero...----What about the story?Of course, No Ntr, No Yuri.And what about the Main Character?