Name: Hayato Kato

Identity : Leviathan

Current organization: Aogiri Tree / Bloody Winged Demon

Rank : SS+

Age: 17

Background: Hayato lost his parents to investigators and was taken in by Yoshimura, who gave him shelter. He was a former member of the Anteiku organization, where he made friends with Renji Yomo and Enji Koma. Hayato left the organization after witnessing the harsh reality of the world, where the strongest prey on the weakest.

Appearance:

Hair: Black, ear-length

Eyes: Brown

Height: 1.76m

Kagune Type: Rinkaku

Alignment: Neutral Evil

Kakuja : His kagune is covered with a black armor that emits a deadly aura and has a strong odor of decaying corpses.

Others:

After fighting Yukinori Shinohara and nearly being killed, Hayato's body begins to consume his own cellular energy in an attempt to heal itself. This results in an immediate increase in strength, but at a cost, as his cells are consumed. He must replenish his cells by cannibalizing more ghouls. This process is akin to a cancer, causing his cells to deteriorate over time, leading to his gradual decline and the need to constantly replenish his cellular energy.