I loved everything about this game, however, I did notice a few issues.
1: The time speedup worked really awkwardly. It sped up Time.timeScale itself, not just the aging process. This led me to fly off the edge numerous times.
2: The game seemed laggier the more I played it, to the point of around 10 frames per second, but this may have been an issue on my end. After a refresh it worked fine.
3: The (spoiler) heaven snot seemed a bit random.
Other than these, this was a wonderful, cute and fun game! Well done :)