Not too shabby for a 'my first game' type of project, and it was decently cute in concept, but ultimately I found the game quite shallow and janky.
The basic skeleton is there for a decent platformer, the cutscenes and characters were quite charming, and I like the inclusion of hidden collectables as a bonus for people wanting a challenge. However, there wasn't really anything noteworthy about the gameplay to keep me interested like a unique mechanic or cool levels to traverse: all it had was bog-standard jumping, so eventually it just devolved into very boring affairs of jumping past boring enemies. The hidden collectable yuzus didn't really add anything to the game: most of them were very easy to get and barely off of the beaten path: a far cry from something I was hoping would be like Celeste's bonus strawberries.
Furthermore, the game was incredibly janky and buggy. Music wouldn't play when I would load a game. The first yuzu could be recollected over and over despite disappearing on first collection. The physics for movement were very odd in how you jump upwards like you're on the moon but fall downwards like you're being pulled by magnets, and how despite having momentum and sliding when you stop you can also instantly kill that same momentum by changing direction. And I know you joke about it by pointing out that ladders, amongst the other various janky features, were probably the jankiest of all, and that was funny to see, but still, at the end of the day, jank is jank and it would be better if you just fixed it or found a better solution instead of releasing this as-is.
Certainly could be a nice little game but I felt like this needed way more time in the oven and something to make it really special, be it more polished movement/levels or a unique mechanic. Still, not a bad first attempt if that's what this was: buggy and bog-standard as it is, it had the basic elements down.