What's Wrong with the Master in Demon Slayer?
Kagaya Ubuyashiki is afflicted with a hereditary disease that causes his body to deteriorate. It’s pretty intense, but he remains a wise and calm leader.
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The Master, Kagaya Ubuyashiki, has a terminal illness that's gradually taking his life. It’s super tragic but also shows his strength and commitment to leading the Demon Slayer Corps.
Ubuyashiki's ailment isn't something specific he did wrong; it's just a hereditary curse. He's still a badass even with it.
The Master has a genetic condition that's slowly killing him. Despite this, he remains a calm and inspiring leader for the Demon Slayer Corps.
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