I've seen side stories and AU's, I've seen short (<1min) animations, but this is a first to me at least. I've never seen anyone make a song for their webcomic, much less a whole album's worth!
Giving the first few songs in the ending album a listen, I like they the ambient feel, but it still feels like the song has a structure. Ambience is sort of just the backing to it, and the songs are more like most of the vaporwave (and similar) songs I listen to. I don't like songs where it's going for a completely ambient feeling, and it just feels repetitive, or simply missing a sense of coherence (feeling like a few random notes and tons of noise were dialed out and called music). Hope my view makes some kind of sense 
Keep up the good work with your music!