Lost in Space with Dazai Osamu (One-shot)

Very original title, I know.

This is a real short snippet from a prompt. I asked two friends to help me with the editing. The prompt went something like this: Two characters ( from different franchises) are stuck in a spacecraft with no fuel, food or water. We can choose if they survive or not. This is a one-shot with major spoilers so proceed with caution.
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Editor: Vel, Proofreader: Bubbles