Blacklist no Kuenai Otoko

Is this encounter fate?! Or the worst possible outcome?! A workaholic young lady and a struggling hotel manager engage in a grown-up game of cat and mouse in this romance!

Tamaki Eto, 32, works as a chef at a hotel that has been in her family for generations. However, the hotel is currently facing financial difficulties, and is also troubled by a particular guest. A man who is always in a bathrobe in his room and constantly makes demands about the hotel's services. But this man, when he steps outside, has an impressive physique that fits perfectly in a suit!?

(Source: Shueisha Creative, translated)