I Survived in Anbu to Become Super Kage

Yako used the Mayfly Technique to leave the Hidden Leaf, arriving in a secluded forest outside the village.

He unrolled the Flying Thunder God's Forbidden Technique Scroll.

The first line in the scroll read, "Without a talent for space-time ninjutsu, absolutely do not attempt the Flying Thunder God Technique."

'A talent for space-time ninjutsu?'

Yako had no idea if he possessed it either.

The second line read, "If practice fails, the body may be torn to pieces."

Yako touched his neck.

Torn to pieces, head separated from body—it didn't seem all that terrifying.

He possessed the Immortal Body of the Evil God. Like Hidan in the original story, he wouldn't die even if his head were chopped off.