Well written dalogue, cute girl, and nice music. A VN doesn't really need anything else. Voice acting at the end doesn't sound very good though.
I like the replaying gimmick. Stuff like the crash and minor text change seems promising, and will be very interesting if you keep working it out further. I would be careful though that new players don't get the idea that it's just a very very very short game.
And maybe I'm missing extra content, but I assume it ends after Jojo crashes the game twice.