I have played RJ01417847. It was okay.
Gameplay is about what I would expect from an rog maker ACT. A little janky and fairly simple, but I wouldn't say it's terrible. Pretty easy overall. Only takes about 30 minutes to beat. There's a bonus CG for beating the game with no continues and making sure to kill all of the regular enemies, and it would have been nice to know that before the first playthrough so I didn't have to play it twice. Actually played through 3 times because playing the challenge mode where you playthrough the whole game with no cutscenes doesn't count for the unlock.
H was alright. Good art but felt just a little bit boring. The first two levels have a scene with a side character before them and the third stage has a flashback scene with the protagonist but other than that the game is only GoR for the protagonist.
Overall I give it a 3/5. Out of all of the h games this is one of them. I will probably forget about it immediately.