Ember Dragon - Chapter 260: Koman’s Revenge

He rose from abjection and achieved eternity in glory.
He embraced the prettiest beauties and killed the strongest opponents.
He was able to shift the clouds into rain and cover the sky with one hand.
He could overrun the entire world and go anywhere as he pleased.
He pacified wars and held the world in awe.
He was matchless in the world.
However, his hair turned white overnight for his beloved woman and he was on the verge of death.
He was surrounded by enemies who were trying to take his life.
He struggled his way to become mighty and fought for everything he cherished.
For this age, he was the only king of the Dark World.
His name was a byword for might.
As a man living in the world, his only ideal was to pursue brilliance.

- Description from Novelupdates

Arakawa Kouki is reincarnated to a Japan with a different history than the Japan he knows with the memories of his previous life still intact. Kouki was discouraged, “Aren’t reincarnation stories supposed to be at some fantasy world filled with swords, magic and elves?!”

“How did it go?” Lily asked the next morning when Ava got to the living room.“Terribly.” Ava replied flatly, dropping into one of the sofas.Sarah entered almost immediately and sent Ava a teasing and wicked smile.“Really? That bad? Lucas is really great in matters of the bedroom. Did you do something wrong?”“Our little new concubine here is a virgin.” Sarah announced. Lily gasped and covered her mouth.“Oh God. That is not the kind of man you want to lose your virginity with,” Lily said.Sarah burst into laughter at Lily's comment.“It's not funny,” Ava scowled.“Actually it is. Better warm up to the idea because when Alpha Lucas Raventhorn wants to take you, he will in the roughest way possible.” Sarah advised.“You mean like last night? I thought he was going to rip you in half.” Ava rolled her eyes.“I like my men rough.”“Well, I don't.” Ava retorted.“If you are looking for flowers, love, and vanilla sex. You are a concubine to the wrong alpha.”“Ain't that the truth.” Ava murmured under her breath