MAOU WO TOUBATSU SHITA GOUWAN YUUSHA, SHOUNIN NI TENSHOKUSU

After sealing the demon king into an item box, the hero falls into a deep sleep for 10 years. After waking up he found the world a very peaceful place, and in order to make a living in this peaceful world he starts a business selling the convenient item boxes he has accumulated throughout his adventures in the past.