The Zenin Clan’s personal weaponsmith and catalog keeper. Ever since mastering the ability to imbue weapons with Cursed Energy, Kenichi has spent a vast majority of his time experimenting with weapons and how they respond to continuous infusion over time. With this, he’s artificially produced 90% of the Cursed Tools in circulation.

Kenichi is a tall, well-built middle-aged man with spiked black hair usually tied back. A scar runs along the left side of his jaw, perpendicular to his jawline. His face is marked by bushy eyebrows and slight wrinkles near his eyes. He typically wears a traditional Japanese blacksmith's kimono, accompanied by a dark denim apron and sandals.

Kenichi is extremely straightforward and blunt, though he maintains an old-fashioned sense of humor. Stubborn and determined, he never backs down from a challenge, especially one within his area of expertise. Like many in the Zenin Clan, he upholds the clan's values and traditions. However, in specific situations, Kenichi can remain unmoved—even when pressured by the clan’s elders.