honestly, this game is just incredible. I must have played through it about a dozen times by now, and I think it's one of the best transformation concepts on itch.io (no death & full completion run, success)! The story is already so interesting: the premise of gathering memories is really nicely woven into the gameplay and exploration (and I'm a sucker for finding collectables in games!). Even the progression is incredibly well done--the first spirit in the courtyard and the gradual ramping up the difficulty with more spirits to avoid or defeat was wonderfully explored. Level design and enemy placement is so creative and really stellar as well; all the areas feel very distinct in layout and use of space!! Being given Yuki's attacking power halfway into the game was empowering and wonderfully changed the experience from survival-horror to more of an ARPG in a very, very fun way--absolutely loved that moment on my first playthrough^^
I do have the occasional troubles with the camera sticking and movement/aiming precision, but these have become less frequent as I play through the game more. It may have been a really nice concept to have the spirits induce gradual mental changes in the protag with each defeat and have the collectables induce physical changes, but I understand weaving them together as the narrative progresses. That said, I do find myself more engaged with the first couple of beginning changes and less so with the end-game changes because they're so similar. As a suggestion, maybe having a small progress meter or counter on the pause menu to track deaths/active spirits/collectables would be useful to prevent playing through the whole game and only finding out at the end that you missed a pickup somewhere.
But anyway, suggestions aside, I think my personal highlight was solving the banner-glasses puzzle and figuring out how to no-damage the final boss. I'd love love love to see this game expanded out into a longer experience if you had the time and interest to do so; it's already got such a fantastic foundation! I feel like I can very easily imagine the transformations taking place over a longer period of time, unlocking different helpful abilities with Yuki gradually remembering herself (things like maybe a time freeze, shield, multi-hit attack, etc?), and expanding the gameworld so that perhaps a gate in the beginning courtyard area could be opened upon defeating the Vice Principal--(maybe this building isn't the only one that's haunted at this university campus)! A scenario where player could run into his old friends from the intro, but they don't recognize him due to the transformations might also be so fun to watch play out. My imagination with how this game could grow even larger is going in all sorts of directions now--suffice it to say that playing through this was a really inspiring experience for me.
Regardless of if you had any intent to keep building upon this game, just bravo on making something so memorable. I'm absolutely in love with what you've made here, and I'll keep on the lookout for more of your work in the future