I checked out the raws on this after reading another work of this author.
Plot is this. MC loves this girl who wants to be a star. He dedicates his life to her. He is stabbed, beaten up multiple times and treated like shit in her defence. He loves her, she pretty much knows this.
She is pretty naive and insecure. Willing to do anything to make it. If she is left alone for five minutes she ends up having sex with others. At the start it is people coercing her, later it's voluntarily.
A lot of rape and forced sex being treated as comedy. What the fuck is wrong with Japan.
As far as I can see the plot is moving to this comedy where the main character ends up like the ultimate cuckold. This is apparently NTR comedy.