Seiken-chan wa Kojiraseteiru

Alba would rather nap than work, and his treasure hunting is more hobby than profession, so breaking the seal on a legendary holy sword is very much an accident. What emerges is Rita, the spirit bound to the blade, whose personality turns out to be nothing like the noble guardian the legends promised. Saddled with a prickly tsundere spirit who openly despises humanity, Alba finds his lazy days over and his adventure just beginning.