The manga I would recommend bc it didn't contain harem and gay stuff

This is GOOD. A young man stand infront of hotel, and the staff welcoming him. About a japense young man (who an orphan and ever taken care by a yakuza called sensei) that semi-adopted by 2 old men (not gay) then worked at the hotel in return

No Harem. An abandoned summoning Hero, Raizel, teams up with demon king, Marsha. In return, Marsha should help Raizel to gain power in his original world.

WARNING!! The chap 1 is full of ANGST!
The 3 brothers got into reincarnation because their abusive family. The oldest hit hardest than his younger brothers, so he unconscious when got reincarnated. Luckily, and old man and his wife adopted them, and they get accepted with the villagers.

If there's harem I'll remove this