The Worldline Has Collapsed? I'll Slaughter My Way Through With a Different Personality

Lu Yanshu has two skills: being a glass cannon and selective amnesia.

The worldline is falling apart? Forget it!

Her family is dead? Forget it!

Until her alternate personality gets fed up:

Go to sleep, good-for-nothing. Just say you want to slack off.

Lu Yanshu: You got it! (Deletes her memories, plays deaf and dumb, and sleeps whenever and wherever.)

After cleaning up the messes across countless worldlines

Straight-laced big brother: Since when were you this badass?

Best gay friend: Whoever you are, get off her right now!

Possessive younger brother in the apocalypse: Are you going to abandon me...?

Loyal little snake in the beast world: We haven't even mated yet!

Top-tier star rescued from a death game: How do you change your attitude faster than a magician changes tricks?

Lu Yanshu opens her eyes: Good heavens! What happened to the world?! I don't want to live anymore!

Alternate personality: Perfect, get out of the way. I'll take over!