You can be like Gab and not gain weight, you just skip lunch/breakfast/etc. for garbage food. You'll feel like shit (how does Gab do it) but you won't gain weight. Now, if you snack on top of meals, that's the killer.
Damn, Candy gave those soots a good ol' British spanking. She's a ruthless Emilico. Though by the looks of it we may not end with a third faction, given the adults and Sarah have done everything to scare the new recruits.
Well, I guess this was the logical ending to the idea of "a girl as a grail". So cool, though I wonder if Miyu can really summon servants in a world without humans. Maybe because she and her friends still remain?
EDIT:
Isn't all of this happening in a world that doesn't acknowledge Illya...
Inaba after the main series ended:
TIL Ayumu ended, I thought it was the only remaining series he had. Yamamoto cashed in on a full year of anime and retired.