Three Lives, Three Worlds, Three Calamities

[Yoriichi x Kokushibo] Ship-focused. Read at your own risk if you dislike the pairing! Apologies for any out-of-character moments!

Yoriichi's ability to speak is boosted to 99%. Yoriichi/Kokushibo only. Many headcanons ahead, such as being able to switch the Transparent World on and off.

After Kokushibo died in the Infinity Castle, he was reborn at age seven, just as his younger brother first showed his talent for swordsmanship! This time, Tsugikuni Michikatsu decided to leave! All I want is freedom!

Why is his younger brother, the child of the gods, so determined to follow him?! In his past life, that child of the gods seemed to exist apart from the world. How could he be like this in this life?

Although he had been reborn as a child, his swordsmanship and Transparent World abilities from his past life were still there. His small body just kept him from using them to their full extent.

He only wanted to find a reason to exist and avoid repeating the mistakes of his previous life. But an accident forced him to use Moon Breathing, and his Demon Slayer Mark awakened right away.

Fine, then. I'll just say goodbye at twenty-five~

Well, he made it to twenty-five. Finally, he died.

In hell, King Yama said, “You're finally here, young man~ I've been waiting for you!” Michikatsu: “I'm a ghost who's been alive for five hundred years, and you call me a boy?!”

It turned out Yoriichi had refused to be reincarnated after death. He had waited by the Sanzu River, where its waters washed over him for four hundred years, erasing all his memories and leaving him with just one obsession: to make Michikatsu happy. Anyone with an unresolved obsession cannot be reincarnated.

Yoriichi was a man of great virtue, and the Buddha couldn't bear to see him suffer, so the moment Michikatsu died, he arranged for him to be reborn! You two, go resolve that obsession!

But before the obsession could be resolved, how had he died already?!

Then he'll just have to be reborn again!

And this time, he got the bonus of becoming a demon fifteen years early!

What on earth is the plan for you two to get your happy ending?