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For 300 years, I've been embraced by a passionate love demon ~Whether I sleep or wake up, I just melt and bend as I'm poked~

“It feels so good, and I can understand that you are desperately trying to resist being swallowed up by the pleasure...” Taken in by a demon's dream and made to cum over and over again
--Anna Shiraishi (25), an office worker with no luck with men, is constantly being rejected by her boyfriends because of a birthmark on her body.
She wonders if a handsome man will fall from the sky...and just when she is thinking that, a boy really does fall from the sky!
The little boy somehow knows Anna's name and claims to be the incubus Alan, with whom she has vowed to be faithful forever.
He told her that he had found Anna every time she was reincarnated for 300 years, using her "birthmark" as a landmark, and they had pledged their love to each other.
Anna can't remember anything and can't believe that incubus exist.
--However, Alan suddenly grows into an adult "whore" with horns and wings, and makes Anna fall into a deep and debauched state just by kissing her. ......?
The first time you see Alan, you'll be in awe of the way he touches your body.

English Webtoon version: https://comiko.net/series/100950/geki-ai-inma-ni-300-nen-daki-tsukusa-retemasu-netemosametemo-tsuka-rete-torokete-koshi-ku-dake