I Became My Own Alternate Personality After the Apocalypse

The spirit of a fiendish sword that destroyed the world fell into a deep sleep after achieving the feat of annihilating it.

When he woke again, he found himself back in his youth, but someone else was in control of his body: another "himself."

How interesting. A weak, easily bullied "self," still looking forward to the future.

The sword spirit hadn't planned to do anything. This wasn't his world, and his enemies weren't his enemies. He had only meant to watch coldly... That was what he had intended.

Then, when a few irritating people came to provoke him, he killed them without hesitation.

Leaving his other "self" completely dumbfounded.

Tch. He couldn't stand it. Had he really been this slow and indecisive?

Later, the disgusting people he'd already killed once in his previous life kept showing up in front of him.

This world was just as awful as before. So why not destroy it again? He'd already been through the whole process once. He knew it well.

Sword Immortal's perspective

At some point, I began losing stretches of time from my memory. When I woke up again, the people who had provoked me would all be corpses.

So I started avoiding people, but strangers I'd never seen before came up to me, looking utterly grief-stricken.

To be honest, I think all these people are crazy.

Then I realized I might be crazy too. There's another me inside my body.

He's irritable, likes killing people, and keeps saying he wants to destroy the world.

I asked him, "If the world is destroyed, where will we live?"

He said nothing. I thought I'd convinced him, and he did back down a little: "Then let's kill everyone else."

Me: "..."

Now the question is, how do I stop "myself" from going on a killing spree at the family banquet? It's pretty urgent.

Couple dynamic: selfcest. Sword Spirit, top x Sword Immortal, bottom

The point of view switches between the two protagonists at any time, so it may be unclear whose perspective you're reading.

Theme: Embrace yourself