Koi no Noroi wa Ai de Toke

"Your body's too sensitive. It was like porn sex..." Kasumi Sugisaki became deeply traumatized by sex after being told this by the first man she's ever slept with. After accidentally drinking too much, her secret was found out by her co-worker, Kurokawa. However, Kurokawa also has a trauma of his own...! The two decide to work together to "break the curse" and begin a relationship therapy! (Source: MangaPlaza)