otabek literally does not and can not function without like three cups of coffee. in the morning when he wakes up, he doesn't have the energy to hardly make any noise or speak or even pour his own cup. he prefers black coffee (like his smol yurio's heart)
yuuri is in a similar situation, but he drinks coffee later on in the day in order to function.
i believe minami also drinks enough caffeine to literally drown a small child which means he drowns in coffee and in turn explains why he's a total spaz.
Christophe only drinks tea because he's allergic to a lot of the preservatives and flavoring stuff in coffee, but he can drink 100% organic black coffee (aka tar)
