Anime Crossover: Invincible Since Demon Slayer

System: "Host, choose a side: the Demon Slayer Corps or the demons."

Yao Yan: "I choose to become a demon."

"What, to become a demon, I have to wipe out the Demon Slayer Corps to complete the mission?"

"Oh, that's no problem. If they all die of old age, that's still a total wipeout. Once I kill all the demons, the Demon Slayer Corps won't be able to pass on its legacy anyway."

"That's how you exploit a bug."

This novel and its characters are entirely fictional. Any resemblance to real people or events is purely coincidental. Do not imitate.