Hokusai Katsushika

Hokusai Katsushika (葛飾 北斎) is a retired detective and the father of Ōi Katsushika. Hokusai is well-known for being a mentor to other Talent Users to the extent that people outside of Japan such as Vincent van Gogh know about him, he also mentored the members of the Gutai Group.

He also has the Talent named Great Wave Off Kanagawa.

Appearance
Hokusai is a rather tall man in his early forties despite his appearance, he keeps his grey hair neat with bangs covering the right part of his face.

His outfit mostly consists a blue kimono held together with a creme sash around his waist.

Personality
Hokusai is a warm and kind person, always ready to help his friends and disciples whenever they need him. He trained the members of the Gutai Group and Rembrandt van Rijn when he was younger, making him a mentor figure to them. He is also well known for his various connections which lets him help his friends in any way possible. His friendly nature also forged him a close friendship with the leader of the Mercurius Private Investigators, Vincent van Gogh whom he often works with.

He is also protective towards his daughter, only letting her out of the house with people whom he trusts like the Gutai Group, the Mangaka Guild, or Rembrandt van Rijn.

Talent

 * Main Article: Great Wave Off Kanagawa

Great Wave Off Kanagawa is Hokusai's Talent which lets him control liquids and warp between pools of water.

Background
Hokusai is a veteran Talent user who is considered a mentor to many, he was at one point one of the most powerful Talent User in Japan founding a group of detectives with his friends. After their friendship fell apart, he became a recluse. Things got worse after his wife passed away leaving him and his only daughter alone.

He went on to mentor the likes of Rembrandt van Rijn, Osamu Tezuka and the Gutai Group. He is also known for his various connections to groups of Talent users, even in the international sphere such as his connection to other Talent Users from outside of Japan.

Beginning
Hokusai was first notified about the incident by his daughter which made him on edge allowing the members of Gutai to come and stay over to keep them safe. He requested help from his old friend Rembrandt who gladly came over and helped them out. While the group was away, he was conducting his own investigation on who might be behind the case.

Appearances
{{Appearance|Chapters=

Gutai & the House of Wolves
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 * Chapter 1 - Blood
 * Chapter 2 - The Night Watch
 * Chapter 7 - Moonlight's Shadow
 * Chapter 9 - Counterstroke