Valt: *eats too much sweets and can't sleep at all*

Shu: *buys everyone presents and falls asleep midway wrapping them*

Ramtaro: *same as Valt*

Daigo: *falls asleep instantly because "why should I be excited about presents? They're not going to cure my depression."

Wakiya: *unwraps his presents to "make sure he's got everything he wanted."

Ken: *stays up all night partying*