Becoming Senior's XX

Lee Han-yul is getting married in three months. He meets his senior, Yoon Ji-han, at a university club gathering after a long time. Suddenly, his senior kisses him, and when he opens his eyes, he's in his house. * "Isn't this better than with your fiancé?" "...Hng, eugh." It was incomparable to what he did with his fiancé, Eun-soo. But he couldn't bring himself to say it outright. Every time his glans pounded against his uterine wall, a thrill like an electrode exploding in his cells rushed through him. White fluid filled his uterus, as if it had been heated on a hot iron. With each thrust, Han-yul flapped his waist and clung to Ji-han's body like a cicada. "Haa, Senior... Why... Why...