"Custom." It's a prompt answer. "Thirst slakes itself after a time."
"You might also try asking him," Iago points out. "He may leap at the opportunity. Or ask his ... how do they say, arm candy? I am given the impression Candy-san could talk him into slitting his own throat. As for our God of War, well ... why do you think he asked the condition he did?"
"I experimented," Iago says with mild glumness. "Your cousin is not permitted in the kitchen for a while, by the way." He hugs Xel close. "Then we shall call for one of those wild-animal-rescue people, or we shall give them a friendly pat before we sit on them."