Is that all? ._. That's how it ends? ;-; Noo! ╥﹏╥
There's a sequel; Gravitation EX, but no one has scanlated more than a volume or two of it & it's been years. It's really annoying. Same predicament with Shin Petshop of Horrors.
Is that all? ._. That's how it ends? ;-; Noo! ╥﹏╥