Usually puzzle games aren't my jam but I enjoyed this one a lot and actually finished it.
The progression and introduction to different mechanics was absolutely spot on. I never felt overwhelmed or confused at any point.
The depressing messages throughout were kinda heavy though haha If that's the vibe you wanna put out there for the world that's cool though.
I wish there were some sound and SFX it was the only thing missing in an otherwise really well put together game.
The graphics although simple fit the game very nicely. I won't pretend to understand what any of the kanji(?) means bit I would assume it was related to emotions or souls in someway. (please let me know). The character you play as was nicely animated although I think it could have been doing with a little outline to make sure you know where it was, at one point I looked away from my screen and totally lost my position (I was inside one of the flame/colour changing things)
I'm not sure if it was a bug on the last level there's a green and blue gate near the end, if you go towards the blue flame/gate even if you turn blue you still pass through the green gate anyways and die. Really confusing.
Also the gate to the next level remains open even if you die after solving the puzzle, not sure if that was a bug or by design.
Overall I had a lot of fun and I don't usually stick around too long for puzzle games but this one really caught my attention and I enjoyed it :)