RYOSUKE'S HUGE OBSESSION: THE PRINCE OF THE OFFICE I HATE SO MUCH IS A P*RVERT WITH A HUGE DICK?!

Kotori works in customer support, but she can't stand her coworker, Ryosuke. Known as the "Apology Prince," he has a frustratingly perfect ability to melt away even the harshest complaints. To cope with the daily grind, Kotori relieves her stress through self-pleasure, though she secretly longs for something more than just her own touch. Her world is turned upside down one evening when, after a few too many drinks, she catches Ryosuke in a compromising position. This isn't the "Prince" she knows at the office-and Kotori is left questioning everything. (Source: MangaPlaza) — Description from AniList community (anilist.co).