Looking for a manhua or manhwa (can't remember) where the uke is a part-timer in a movie set or something. At night he is a gamer who is very skilled. And he is also very good a tech stuff. But no one knows his gamer self. He tries very hard to hide it and at one point he even needs to be at an eSport tournament but he also needs to be at an event but he manages somehow. Can someone tell me the name of the manga
It's yaoi or shounen ai. There are four people living in a shared house. The ML I think is the new tenant, and he is also a teacher. The MC has a younger brother who goes to the school ML teaches at. I don't remember much more but if it hasn't been changed, the cover of the series has the four people in yellow tracksuits

Possessive but not in a way they will imprison their lover or crush. More like, they would do pretty much anything to protect their love intrest
https://www.mangago.me/read-manga/checkmate_1/