Wei Huimie Shijie er Jiaban Ba!

A reclusive girl spends most of her time reading tentacle-themed comics and shows little interest in anything else. On her birthday, she makes a wish for the world to end, but instead receives a female demon programmer. The two quickly form a connection due to their shared desire to destroy the world. They work together as "project partners," putting in daily effort to achieve their goal in a way that leads to comedic outcomes.