Maybe it's just me, but I never could get into Rabi-Ribi and I've tried multiple times. Concept is solid, but it's just filled with these silly minor issues that bug me. Most of them are inconsequential, but they add up over time.
Like the fact that it's definitely a bullet hell, but it's not clear where exactly your hurtbox is. Or the fact that sometimes the background or foreground textures aren't properly mapped to the terrain making platforming in some areas more difficult than it needs to be.
That said, I can't deny it might just not be for me, and it's usually pretty cheap so if the concept of an ecchi anime bullet hell platformer appeals to you it may be worth a shot.