Reborn, I Bind My Romance-Obsessed Sister to a Zombie Monster for Good

[A first-person short mystery story, written as a writing exercise]

Synopsis:

My older sister and I were selected for a bizarre survival game filled with countless ghosts and monsters.

We took precautions against everything, but forgot she was a hopeless romantic.

My dear sister set her sights on the terrifying monster in the game.

To be with the monster, she chose to stab me in the back.

I died horribly at the monster's hands.

I was reborn, still full of resentment.

Everything reset, and I returned to the beginning.

This time, when my sister sweetly called the monster husband, despite its terrifying face,

I just laughed coldly.

Without me around, let's see how she manages to get herself killed!

Theme: Stay true to your original aspirations