This game is too grindful. The scenes at the start are good, youmu is just too hot, but there are not too many of them. In just 2 dungeons you get repeating scenes. If all you want to do is jerk it, get a completed save. If you're a hikki with obscene amounts of time to burn, please complete the entire game.
and don't buy this for god's sake. Wasting money on porn games is for losers even bigger than those who play them. Just pirate it.