Fujishiro Shark

Shark is a member of Seto Group initially summoned by Suns father during the Michishio familys initial visit to the Seto family home to attack Nagasumi. In human form he later becomes Nagasumis P.E. teacher. By his thinking the sooner Nagasumi dies the sooner everyone can return home. He often acts on this logic trying to eat him. According to him the answer to all problems is by eating the person causing the chaos be it Suns or Lunars fans or a suicide bomber from his own group. he often seen sleeping and he can transform in only a sharkhead but also a whole shark as seen when hes in the sauna. partly wikipedia