I can see why this was popular in 2011-12. It covers some niche genres well like body odor fetish and progressive corruption. The 3D girl character models would have been appealing back then as well. It's aged like milk unfortunately. Many scenes are just dialogue with very few CG. This is the worst way to use rpgmaker and it's really a VN crammed with tedious talk to everyone in town and frogger mechanics and worst of all lacks a save anywhere feature. There's this weird trend with japanese devs of this era sticking to decade old versions of rpgmaker even though they were incredibly feature sparse. For its time Flash would still have been a good option. Today something like Twine, Ren'py, or even Unity would make more sense. While the gameplay is even more tedious, the spin-off game Inma Sugoroku has much nicer art and I wish the rest of the series was in the same style.
Overall not worth playing today. Not even worth looking at the cgs. Try corruption of champions or one of the million fallen female knight VNs by kuribayashi chris, Kemuriya, or Lilith instead. I was going to mention oneone1, but he also used rpgmaker terribly.