This is a manga about the karate girl who goes to the mainland to teach karate as an idol but gets roped into degen rich people sex shit and learns about the dark side of the entertainment industry
https://mangadex.org/title/b6116025-1a94-4f32-9c9b-aa341f3950f0
https://mangadex.org/title/b6116025-1a94-4f32-9c9b-aa341f3950f0