The game is overall good. Let me start with a personal thought. Although I usually don't like regular RPGM combat in adult games, the modified version in this one is a welcomed change. The combat is made easier and less grindy by allowing you to restart before the encounter, not having to save every few minutes just so you don't lose progress. The gameplay is a simple loop of "go somewhere, defeat enemies, get an ecchi scene and progress".
As for the content: There is certainly variety. Quite a lot of scenarios to explore, and the progression of the events feel natural. The animated CG is definitely not the best I've seen, but it's serviceable. That's the only "mediocre" thing about the game in my personal taste, hence the 4 stars. The story is somewhat generic, but that's not really the point of these games anyway, is it?
As for the content: There is certainly variety. Quite a lot of scenarios to explore, and the progression of the events feel natural. The animated CG is definitely not the best I've seen, but it's serviceable. That's the only "mediocre" thing about the game in my personal taste, hence the 4 stars. The story is somewhat generic, but that's not really the point of these games anyway, is it?