For those who don't know, this game does have a TRUE ending where the heroines are saved before anything bad happens but the rest of the alternative three bad endings have mind break and forced prostitution so be warned.
No, it has pornographic content. It's just not tagged properly on Steam so it's not tagged properly here either. The only Taimanin games with no sexual content is Action Taimanin and Collection Battle Arena.
https://youtu.be/kUeZRhQrv-k?si=AnNmPenxrvI8SCDr