Christopher Ydra is a principal of Yggdrasil esper academy,he is a man of many talents and CEO of a giant New Energy Company famous around the world.He has a gentle appearance and a cold look, he has a soft heart and only shows it to one ordinary student,Sui a white wolf boy with black hair and eyes black.And besides Sui,he acts extremely cold towards everyone and even his servants and he is also a secret villain boss.His strength {Nothingness} and can turn anything to nothing, immune all damage