I can't remember this BL QT novel where in one arc, MC is in the body of an actor who bullies other stars. Because of the original owner of the body, MC dealt with the ML who is also another actor (but with powerful family hidden) complaining about being given a very spicy food (something along the way where original owner ordered his assistant to put something numbing spice to ML's food) So, MC dealt with the situation acting like a tsundere who just wants to give food to a spicy enjoyer ML. There's also this scene where MC has body guards around him and a dart pierced on his back (with the reason of "cannot feel pain") Thank you for the replies T^T
It sounds pretty similar to the second arc of 'Everyone Knows I'm a Good Person' but it's been awhile since I've read it so I might be wrong