Mukashi Yuusha de Ima wa Hone

Alvis, the hero who defeated the Demon King, perished in their final battle only to awaken as a skeleton. After retiring from his heroic duties and spending three years in peaceful leisure, he decides to reenter the world of adventuring to search for his old friend Izana. Now operating under the alias Al the Skeleton, his undead appearance inevitably invites trouble wherever he goes. From escorting traveling merchants to charting unexplored dungeons, Al takes on a wide variety of quests, once again raising his sword not for glory, but to protect the living.