Another option

                                                    Eventually, Fyran and the other kids left after eating their share. While the people in the North were quite slim, they sure had a healthy appetite. As soon as they left, however, Derenus asked Zaos something weird.

"Can you touch my hand for a moment?" Derenus asked.

"… Why?" Zaos frowned.

"I want to check something, if you are the reincarnation of the demon god," Derenus asked.

"What the hell… what makes you think that I am?" Zaos asked.

"The fact that you are stronger than us with magic, the fact that you use weird techniques with magic and the fact that the gift of the demon god doesn't affect you," Derenus replied. "The demon god had another characteristic and I will discover if you have it by touching you."

"What kind of characteristic is that?" Zaos asked.

"The demon god could steal all the mana of those he touched," Derenus replied.