Kaito: He saw his dad fall down the chimney in Santa guise when he was 7. Hasn't believed since.

Akako: Never believed in Santa Claus. Her grandmother felt that such things were trivial, and she didn't want her granddaughter buying into the nonsense.

Urara: Wtf, Santa is real! D:

Angie: Her mother sat her down at age 10 and explained the entire thing to her. She wasn't phased.

Sano: Doesn't celebrate Christmas, so ahaha what Santa?