Natsuhiko Kyōgoku

Natsuhiko Kyōgoku (京極 夏彦,) was a notorious criminal instigator and had the ability Possession Drop.

Appearance
Kyōgoku was a white-haired man, dressed in tattered traditional kimono set and occasionally donned a red  mask on his head. He also wore a pair of circular framed glasses.

Personality
He was thoroughly disliked by Ayatsuji and always laughed at him in return. He always used a good-natured, old-fashioned tone of voice that added to his stench. He had a unique philosophy and acted according to it. He had followers and supporters all over the place, and he had a mysterious charisma that attracted them and followed his orders and words. Naturally, he was vastly knowledgeable about ghosts, folklores, and the idea of the supernatural.

Ability
Kyōgoku's ability, Possession Drop (憑き物落とし,), allowed Kyōgoku to drop  on targets, which then altered their mind and/or their spirit.

Background
Kyōgoku held a record of 38 counts of instigation to murder, 29 cases of extortion, and hundreds of charges for robbery, abduction, and assault, attempted or not. However, Kyōgoku did not directly do these crimes but used someone to commit them.

Quotes

 * (To Yukito Ayatsuji) "Ahh… What a fearsome ordeal. Such is the fate of anyone who confronts Detective Yukito Ayatsuji, a man more unsavory than a killer."
 * (To Yukito Ayatsuji) "Facing you was such a joy. What a pity. The battle up until now was simply a precursor of this ceremony.
 * (To Yukito Ayatsuji) "You will never defeat me, 'Homicide Detective.' This battle was doomed to fail! It's a mired retreat, with no winner in sight! Enjoy the path of the loser, Ayatsuji-kun, and watch as your final prediction fails to come true!"

Trivia

 * Kyōgoku's ability is among the abilities that is not derive from the real-life writer's work. Instead, it derives from the main character's exorcism technique.
 * Unlike their rivalry in Gaiden, the real-life is close friends with.