interesting but also depressing game...
but besides simulating what the life of a hikikomori looks like, there isn't much to the game itself.
there aren't many things to interact with (would have been interesting if you added the "purchase food online" function to the game and added a bathroom the character could use), no "secret ending" one could try to achieve (*wink* *wink* window *wink* *wink*) and there is an invisible wall beyond the door.
i noticed some typos in the texts that come up when you look outside of the door such as "What if i say something stupig"
off-topic btw but after reading the email in the game and taking a look on your twitter account, i was kinda happy to find out that you are gay :)