Kazui is born to Ichigo and Orihime less than ten years after Yhwach's defeat, and lives in Karakura Town with his parents.
Kazui is adventurous, regularly making uninvited appearances in Hiyori Sarugaki's home and freely interacting with remnants of Yhwach's Reiatsu.
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.
The 10 Thousand-Year Blood War arc
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.
- Masaki Kurosaki (Grandmother/dead)
- Isshin Kurosaki (Grandfather)
- Sora Inoue (Uncle/dead)
- Orihime Inoue (Mother)
- Ichigo Kurosaki (Father)
- Karin Kurosaki (1st Aunt)
- Yuzu Kurosaki (2nd Aunt)