Hell's Paradise || Undead Unluck

A terrible story I'm posting just to embarrass myself

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I have no idea when this whole mutual-countering rule became popular. A bunch of old fools and little fools believe it, too. In the face of absolute strength, attributes are just trivial details.

After dealing with the patient who caused a disturbance at the hospital, I still have to deal with the elixir of immortality. Well, let's have a little fun.

Welcome to the beautiful island of Writing Immortal Island, pronounced Hell. This is my turf.

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I know about and have read the Undead Unluck manga, but this story has nothing to do with it. The name is just the same.

There will be appearances from Demon Slayer and Black Clover.

Historically, Hell's Paradise comes first, in the eighteenth century, followed by Demon Slayer in the twentieth century.

Theme: The ugliest story in the world