An interesting Point and Click game! I think I got until the end in the neighbor's apartment? The puzzles weren't too obtuse, nor hampered by UI/design, so this definitely has potential.
Some feedback:
The text auto-advance is a bit too slow for me, which was especially apparent when I found Mumei's hidden diary.
In addition, I didn't realize there was an actual time limit the first time around. Perhaps that should be made more clear.
And finally, randomly falling to your death whilst jumping, whilst VERY funny, is also quite aggravating.
It seems to me that, with the time limit, 'random' deaths, and slow text, the game punishes exploring more than it rewards it. If that is intended, that's fine, but I am not sure if it is?