This is utter, utter trash. It gets a 2 instead of a 1 only because the art is very pretty. It is a wish-fulfillment power fantasy of the highest degree. MC's family is evil for the sake of being evil and completely devoid of foresight or indeed any semblance of sense. They apparently think that it's completely normal for one person to tend to seven high-maintenance celebrities all at once, evidently never communicating with anyone else in any of their respective industries. That leads into the greatest problem: the MC. He is the most complete Gary Stu I've ever seen, completely lacking in any flawsexcept, as is tradition, for not noticing that girls are falling for him left-and-right. On top of being the manager for his celebrity family, he's an excellent cook and make-up artist, and he can win a hand-to-hand fight against a black belt who probably outweighs him by three times. I guess we don't know how good his grades are at this point, but I'm sure they're middling at worst because there's no way his family would've let him do remedial lessons because that would take time away from tending to them.

Avoid it.