It took me a few minutes but I think I understand the ending. Basically, this is a story of beta male discovering he's a sex prodigy (What a suprise) so he cucks the popular guy and starts using whatever methods to take whatever girl he wants. But at the end he realizes that all the girls he had were still in love with someone else despite his level 99 cock. None of the girls actually fell for him and this actually made him the ultimate cuck, as symbolized by him getting a boner at the end watching one of his girls bang someone else. In that way, it's actually not a bad story (for hentai standards) kinda original. /End of over analyses of porn.
Basically, this is a story of beta male discovering he's a sex prodigy (What a suprise) so he cucks the popular guy and starts using whatever methods to take whatever girl he wants. But at the end he realizes that all the girls he had were still in love with someone else despite his level 99 cock. None of the girls actually fell for him and this actually made him the ultimate cuck, as symbolized by him getting a boner at the end watching one of his girls bang someone else. In that way, it's actually not a bad story (for hentai standards) kinda original.
/End of over analyses of porn.