All the characters are annoying. none of them likeable especially the girls. I am girl myself l prefer rooting for girl, but here I can't. all girl in this manga are just bad/evil.
How did she make the (fake)sister push him the app?
What is the probability of him choosing that planted girl?
How can she specifically find a thug with a loan shark brother?
How did she know he has talent managing an idol group?
No idea how an editor read this and said "Yup, people will love this, and definitely won't need to have an advanced form of brainrot to enjoy the plot."