This is some great standard NTR.
The art is a bit janky, but it's quite erotic in that MS paint kind of way. The sex sounds are done well. The gameplay is inoffensive. It's not at all interesting or innovative, but it's also not annoying and doesn't get in the way. It's just there to simulate the power difference between MC and the NTR dude, and to act as a short interlude between scenes.
This is a standard Japanese style NTR done competently. The MC remains oblivious so it doesn't get deluded by netorase stuff. The focus is on the cheating, and quite a lot of the dialogue deals with this aspect and comparing the NTR dude with the MC. There are some great content with side girls as a bonus too.
There are quite a decent amount of scenes for a game that isn't overly long or strenuous to get through. I'd say the ramp up in corruption was slightly on the fast side, as the midgame got a bit repetitive as far as corruption arc is concerned. It also lessens the impact of the final sequence if the girl was already fallen long before the end game. Still, it remains pretty hot throughout, and there are post-ending scenes which is always nice.
The translation is quite good for MTL. It's edited MTL that is actually edited. It's readable English most of the time, and the nuance of the dialogue is kept intact.
All in all, it's a great NTR RPGM title that doesn't do anything new but executes the standard formula in a satisfying manner.