Just who is this Aerternistan or what ever is his name ヽ(`Д´)ﾉ like ahhhhhh

It’s the kid who Lucas rejected because Aeternitas had Weak dull jeweled eyes so Lucas rejected him (he wanted Lucas to be his mentor). So before Lucas went to deep sleep, Aeternitas used black magic to become the strongest emperor in Obelia. Now, he’s possessing healthy bodies to continue ruling the empire.
Ps. That’s not Anastacius, Claude killed him. But right after he took his last breathe Aeternitas possessed his body. ヾ(☆▽☆)

possessed?! WTF ouh damn this family really (╯°Д °)╯╧╧