Arata Kirishima

Arata Kirishima (霧嶋 新, Kirishima Arata) is the father of Touka Kirishima and Ayato Kirishima. The ghoul investigators named him the Corpse Collector (骸拾い, Mukuro Hiroi).

Yukinori Shinohara and Kureo Mado had exposed Arata's identity, and the investigators were subsequently able to catch Arata.

Appearance
Arata is a slender man of average height, with short dark blue hair. His manner of dress was never particularly noteworthy, besides wearing a large overcoat while scavenging to disguise himself. Neighbors described him as being very slim and possibly even in poor health.

In his younger days, he slightly resembles Ken Kaneki.

Personality
Virtuous and gentle, Arata is another pacifist ghoul who is content to live peacefully with humans and wants the same for his children. Being a scholar and a reader, Arata embraces the human life by cooking human food and consuming them; even if he and his kids cannot digest it. The human qualities to blend into both human and ghoul worlds are traits he believes Ayato and Touka should learn in order to live happily. He shows to be somewhat a renaissance man; knowing how to craft, cook, and socially interact well with human acquaintances.

The death of his wife had a profound impact on Arata, causing him to thirst for power so that a similar tragedy would not unfold again. This desire ultimately caused him to scavenge for the corpses of ghouls and humans alike, seeking to become a kakuja in order to protect his family. During their confrontation, Ayato angrily exclaimed he hated Kaneki because he resembled and reminded him of Arata.

Past
At one point, Arata met his wife Hikari and had two children with her. When Hikari was killed by Kishou Arima, Arata was confronted by an infuriated Renji Yomo, who blamed him for his sister's death. Yomo's words, combined with the guilt he felt for not being able to stand up for his family, made him seek power and he began scavenging both human and ghoul corpses.

Arata moved into a neighborhood in the 20th ward, hoping to start a new life with his family so they could live peacefully. He taught his children that living as both a human and ghoul would mean that they would have to endure hardships in order to protect their way of life. Arata used to take his children to the library to read and study, to allow them to take care of birds, and he even convinced them to eat human food, in an attempt to teach them the ways of a human life (in order to make them learn to coexist peacefully with humans). Whenever he went to collect corpses, Arata would leave his children alone in the house. On the night before he vanished, Arata asked his children to promise him that they would protect and watch over each other.

Later on, he was found by Kureo Mado and Yukinori Shinohara. His whereabouts were established through traces left behind by his kakuja. What followed was a life or death battle with the CCG until he was eventually secured. Thereafter, he was subjected to the harvesting of his kakuhou, which is being used as the CCG's exoskeleton armor quinque, respectively named "Arata."

Power and Abilities
Ghoul Physiology: Having been born a ghoul, Arata possesses enhanced physical capabilities along with a koukaku kagune, and a kakuja obtained from continuous cannibalization.
 * Koukaku Kakuja: After eating left-over corpses of ghouls, Arata developed a kakuja armor that had covered his whole body. After being captured, his kakuja was used to manufacture Arata which makes it capable for investigators to face SS to SSS-rated ghouls.

Trivia

 * Arata likes cooking human food, being with others and studying.
 * Arata loves his wife, Touka, and Ayato.
 * His alias "Corpse Collector" implies that he scavenges corpses instead of hunting humans for food.
 * In the Tokyo Ghoul Flip Calendar, Arata researched human marriage proposals before he first asked Hikari to marry him. It failed.
 * Like Ayato, Arata does not like bugs.

Quotes

 * To Touka and Ayato: "Touka, you're his big sister so you have to teach him a lot of things. Ayato, whenever your big sister is in trouble you must protect her."
 * To Touka and Ayato: "It's certainly true... that there are many humans. But we also have our own world. And in order to protect that world we have to keep enduring everything."