Yuusha ni Narenakatta Ore wa Shibushibu Shuushoku o Ketsuishimashita.

The story revolves around a young man named Raul Chaser who dreamed of becoming a hero with his team of skilled heroes-in-training, but due to the collapse of the Demon Empire, the Hero Program was suspended. With Raul’s dream crushed, he was forced to find a new line of work and ended up employed at a small department store called Magic Shop Leon. Raul’s life since then has been busy but dull, when one day someone arrives at the store applying for a job. Raul finds out that the new hire is the Demon Lord’s child and also happens to be a cute girl.