I have played RJ01414265. It was good.
The gameplay was okay. It's a type of roguelike where you do some small dungeons, resetting your level and losing your consumables each time. You do get to bring your equipment between runs, and by the end of the game you really need the benefit they give or you'd quickly get overwhelmed. You get equipment from reaching the dungeon boss win or lose, so losing to see the scene isn't a complete waste of time gameplay wise. Overall the difficulty is at a good level where the game isn't trivial nor completely reliant on getting good luck to win, but it does start to feel pretty samey by the end. It doesn't help that there are very few regular enemies at each strength level so you end up seeing the same ones over and over. There are multiple translation errors in the skill descriptions as well.
The h scenes are good. They're split between sub events that occur halfway through each dungeon run and GoR for the bosses. The sub events are all molestation scenes, with 2 or 3 progression levels for each scene. The boss GoR has 3 or 4 progression levels and for most bosses only has penetration in the last level. I don't have much to say other than I liked them.
Overall I give the game a 3/5. While I do think the gameplay was better than I expected, the flaws bring it down a good bit. And while I enjoyed the scenes they feel lacking in a way that I don't know how to describe.