Aside from the usual things, this game does things so bad, I woon't believe it.
The MTL is shitty, but you understand mostly what to do...
The graphics...let's settle with, okayish...it's usual 3D-low poly, min physic settings. These Tits look and behave like balloons.
The story....meh. You want to see your friend, to fuck your girlfriend...netorase is okay, but not what I seek in ntr games.
The gameplay...man this could be somehow funny....but no fuck you gamer.
For me this moment was, when I got successful to the "he will fuck her now" chapter...but...oh boy, I did not click on the condoms in the first 2 chapters...and then the option to buy some didn't appear in the shop...raging for 30 second's and then reload when I was in chapter 2 was really funny...
My suggestion would be: get the savegame where all is unlocked, watch the gallery, but don't play it...and don't even hope you could play AND fap at the same time.