Fairy Pairing

Park Gyu-Chan lived a debaucherous life of one-night stands. Today, as usual, Gyu-Chan got drunk and went clubbing in search of his ideal type. He finally met a beautiful blonde woman with big breasts and spent the night with her. Gyu-Chan opened his eyes in his bed, his head dizzy from the alcohol. He witnessed the unbelievable sight of a winged man thrusting something ferociously into his anus. The man introduces himself as the fairy 'Mon' and asks Gyu-Chan to save the fairy world... But... The way to save the fairy world is to thrust into my anus and ejaculate?

(Source: Lezhin, translated)