Shori Shibuya

Yuri's older brother who is apparently a genius, likes to play dating simulators and is very protective of Yuri (once described by Murata as having a "brother-complex"). He is to become Bob's successor as the Maoh of Earth. When he was younger, he met Bob who rescued Yuri and him from some bullies. While initially despising his parents for having a divorcement argument, he also resented the fact that Yuri will have to go to Shin Makoku eventually. Bob explained to him it will happen in the future, and Shori was contented being with Yuri for the time being. Shori wanted Yuri to call him "oni-chan" but Yuri refused to and became more independent when he went to elementary school.

It is seen that Shori communicates regularly with Bob, who he complains emphasizes his age more than anything else. Apparently his short term ambition is to become the Mayor of Tokyo. Often carrying a cold attitude, he did not welcome having Wolfram and the others in his house. He seems especially distasteful to Conrad, and makes a point of demanding that Conrad returns his clothes to him properly cleaned (since the two of them are about the same build and size, Jennifer usually lends Shori's clothing to Conrad). Later, he and Conrad form an understanding based on their mutual desire to protect Yuri.

Once Shori ends up in Shin Makoku, he becomes suspicious about the Original King, Ken Murata, and the four forbidden boxes. He correctly deduces that Ken would betray them, but nobody believed Shori until Ken betrayed Yuri by allowing Yuri to be possessed by the Original King. Shori eventually goes to Shin Makoku where he learns to use the powerful maryoku he possesses. Wolfram gave Shori a pact to the elements, somewhat like how Odine gave a pact to Yuri to gain control of his maryoku. Shori's maryoku is like of Yuri's, the control of water, but initially Shori's maryoku takes the form of a giant hand.