No Yaiba Episode 21 — Kimetsu

Rui was born with a frail body that left him unable to walk or go outside. Muzan Kibutsuji appeared and "saved" him by turning him into a demon, giving him a powerful body at the cost of consuming humans.

The conflict is halted by a Kasugai Crow delivering orders to take Tanjiro and Nezuko into custody. Kimetsu no Yaiba Episode 21

As he disintegrates, Rui realizes his parents actually intended to die with him out of love. Tanjiro, sensing his grief, shows mercy by placing a hand on his back. In the afterlife, Rui reunites with his parents, who promise to stay with him even in hell. Conflict Within the Corps Rui was born with a frail body that