I’m looking for a manga that I read before (regretfully, I don’t remember the title). It’s a shounen ai that takes place at an office. One of the main characters (he has brown hair) is a new employee who left his previous company because of his past relationship with a guy that got spread around the workplace. Once he moves to the new company, he meets a guy with short black hair who is his boss/manager. The boss takes an interest in him and they have a one night stand. It develops and they keep on doing this. The rest, I don’t remember, but I know that the boss moves to another location and the brown haired guy is devastated. Also, the boss smokes, and he tries to quit because of the brown haired dude. Also, the manga is not in color.

Is it work in?
There’s a similar one shot Koi No Senryaku Management

Sounds like Doushitemo Furetakunai by Yoneda Kou.