Kazui is a small boy with orange hair and large dark orange eyes. His face closely resembles that of his mother's, having the same shaped eyes and facial curves, while he inherited his father's spiky hair, though his hair is noticeably smoother than Ichigo's. He wears a green hoodie. When he transforms into a Shinigami, he wears the standard Shinigami robe, though he retains his hoodie.
Kazui is adventurous, regularly making uninvited appearances in Hiyori Sarugaki's home and freely interacting with remnants of Yhwach's Reiatsu.
Kazui is born to Ichigo and Orihime less than ten years after Yhwach's defeat, and lives in Karakura Town with his parents and both of his twin paternal aunts Karin and Yuzu Kurosaki.
Ten years after Yhwach's defeat, Kazui goes to Hiyori Sarugaki's home, but is chased out by Hiyori. He returns to his house and goes to Yuzu's room, where he sees a hole oozing out Yhwach's Reiatsu. He proceeds to touch the Reiatsu by sticking his hand in the hole, but as he does this, the last remnants of Yhwach's power dissipate, which surprises him. He then turned his back as Ichika Abarai suddenly transports herself through a makeshift portal. Ichika introduces herself as a Shinigami apprentice, and Kazui introduces himself and reveals he is a Shinigami as well, shocking her.
Powers and Abilities
Enhanced Speed: Kazui has shown to be very fast; after being caught in the Visored warehouse, Hiyori noted that he "runs like the wind."
- Zanpakutō - Kazui wields his Zanpakutō on his back. Its tsuba has four prongs bent out to form the shape of the manji, essentially identical to the shape of the tsuba of his father's former Bankai.
- Shikai: Unknown
- Bankai: Not Achieved