Webduring the heian era, over a millennium ago, muzan transformed into a demon after an experimental treatment to cure his terminal illness.

Webmuzan kibutsuji (鬼舞辻無惨) is the man responsible for transforming nezuko kamado into a demon and the main antagonist of demon slayer (kimetsu no yaiba).

Webdespite his fearsome reputation among slayers and demons alike, muzan had an illness that almost took his life in demon slayer, resulting in his intense fear of.

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Websoon after, however, he learned that the medicine had actually transformed him.

Webin his final moments, muzan’s appearance transformed into that of a human baby, growing in size and resembling a toddler.

Weborigin story reveals muzan's accidental transformation into a demon due to experimental treatment with blue spider lily.

Now immortal, he became consumed by the idea of maintaining his.

This form may have seemed confusing.

Webas tanjiro begins to be cured of the demon transformation brought on by being infused with all of muzan's blood, muzan initially tries to quietly convince tanjiro to stay.

Webironically, muzan’s brush with death was the catalyst for his transformation into a demon.

Since then, his only.

Stronger, faster, and virtually immortal, muzan's new mutation only came with two.

Muzan created demons by sharing his.

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