The mysterious giant underground labyrinth "Tartaros". There, adventurers day and night venture looking for treasures and other riches. The rookie adv ...enturer Lavi who has challenged the dungeon, due to his bad luck, falls into a trap. It is at that moment when he meets a beast woman merchant Philo, with whom he makes a deal to be her #1 customer.What will happen on Lavi's adventure? Will he continue to buy items from this beauty!Fantasy comedy about the rookie adventurer Lavi (shota) and the merchant beast woman Philo (ponkotsu) !!