Since this release has given me plenty of time for my mind to wander, I'm trying to think of a list of comics where the characters really get a life of their own, such as this one. Likely will want to reread them again.
First that came to mind was Tokyo Crazy Paradise. Just something I keep falling back to at least once a year to reread.
Jitsu wa Watashi wa was thankfully my second thought, as I don't think I've reread that one since it completed, so that might be fun.
Oddly enough, I find YKK daunting to reread, but not as much as Princess (my comic Unicorn, just like Moonlight Sculptor is for novels - no idea if I'll ever by able to catch up, much less finish).