I'll be honest I don't know what it takes to write a review but tldr.
Combat sucks. The hitboxes are weird and the boss attacks/enemy knockdowns rely on overused grappling/escape mechanics with an 'escape' threshold meter whenever you're simply knocked down. It has the added luxury of not having invincibility frames or having a movement system good enough not to warrant its poor platforming. While I didn't care for the CG since it's just a slightly moving still frame with a generic hentai protagonist voice over, other things such as NPCs not interacting with you if they're facing away from you while trying to talk to them, very, very threadbare levels that feel as though you could pick up and make them in a level editor in 10 minutes a piece, max- or the fact that the controls for window resizing, frame rate and sound all have to be done through the read.me, separate EXEs, or manually adjusting the volume without a dedicated menu on its own. The sprites are a bit cute if albeit simple but the amount of minimal effort for this game came at the cost of its enjoyability. I spent more time writing this than I did actually playing the game. For reference I stopped playing at the spider boss since it was just another 'don't get hit' fight with frankly broken aiming/attack triggering from the boss unable to hit you while firing its webs but on contact the boss does damage to you. And it's an example of floatier jump/falling mechanics that were changed at the start of the second level. I'd expect to see these issues in a flash game, not something someone's selling for actual money.