Yuusha ni Narenakatta Ore wa Shibushibu Shuushoku wo Ketsui Shimashita. OVA
Unaired episode that was released with volume 9 of the light novel.
Raul had always wanted to be a hero, but failed the exams necessary to become one. He reluctantly took a job working at a small electronics store called Magic Shop Leon. His life is dull but busy until a new girl comes applying for a part time job. She's the daughter of the demon king who defeated him in his exam.
(Source: Crunchyroll)