Crushed to death by a vending machine in his old life, an unnamed man wakes up reincarnated as a sentient vending machine deep in a fantasy dungeon. A young hunter named Lammis finds him, names him Boxxo, and starts carrying him on her back, where his weight doubles as a counterweight that finally lets her control the raw strength of her Blessing of Might. In exchange, Boxxo can stock and sell anything he remembers from his human life, turning the pair into an unlikely hit with dungeon adventurers who've never seen convenience like this. This manga adapts the original light novel series.