This game is fucking *weird* man, it's a weird little rhythm game with four heroines and two sex scenes per heroine (with two variants each, small things, generally just adding a more extreme kink like pissing or choking), as well as an 'ending'. The routes are meant to be sequential but aren't laid out that way, so, play them left to right for the 'intended' 'story'.
The game play is weird, it grows increasingly complex as you get deeper into each route and it doesn't really work that well, it's a little challenging but not hard.
As for kinks, each route has its own 'theme', the first being wife sharing/a weird three way relationships where two guys are fucking the same women and are friends, the second being an e-girl who cheats on you with a black dude (yeah, interracial NTR out of nowhere), and the third is a Gyaru with a brother complex who gets addicted to sex and becomes a free use public slut... like said its weird.
The final route which is the 'true' ending has actual romance and an almost tsundere character, its more or less satisfying, albeit still very... strange.
Anyway, its a weird little 3 hour rhythm game with good art and decent dirty talk, I wouldn't pay for it, but it was alright to play.