Comment is full of spoilers, ignore if you haven’t finished:
This was really good, in my head the ‘purify’ ending is really a brainwash ending, because why would you stop being your own species just to go outside? Also, none of his points are good, why would he believe she never considering living for herself, doing things herself? It’s a weird assumption to make. The idea that being corrupted into a whole different species is good feels exactly like some church dogma and I’m here for that headcanon. Plus, it explains how a many hundreds to thousands year old being would act like they have only lived a few years, if the light was actually corrupting her mind and making her dumber, and more human-centric. I do wish we could get it the other way around, where he becomes a spider, and both sides end up being equally evil, but it doesn’t seem that way because he lives in the opposite ending path. Either way, the world building was really good, the characters seem to be pretty fleshed out, when you finish all of the endings (I think I did? I got both death sides, friendship, purify, and corruption) I feel like you know a lot about the world. I do wish there was an ending where our main character finishes raising the kids then gets up and travels more like she used to, maybe the CG could be a shot of the end of the world or something. Anyway that’s just me being wistful about things, it was good!