As the name state please recommend me something similar to Top Management. I have already read Super Star of Tomorrow, Perfect Superstar, God of Music and God of Cooking. So, anything other then these. Also don't recommend I am really a superstar. I don't like to read Harem genres. Thank you for your suggestions.
I didn't know IRAS is a harem novel... I mean, MC only has one GF throughout the series... Anyway, can't recommend anything, since IRAS is the only novel I've read from the ones you mentioned.
I think Rebirth: how a loser became a prince charming is good. It is complete as well. https://www.novelupdates.com/series/rebirth-how-a-loser-became-a-prince-charming/