Kunikida Doppo, the greatest auctioneer oh high class people, working in a large secret hall, where all kinds of things and creatures are sold, all of them sold at extremely high prices. Kunikida takes care of the bail and auction, often evaluating the quality of the product

Just like any day, Kunikida received a new product to be auctioned. In his personal room there was a huge cylindrical glass tank, in which was a very rare creature, a merman tied to chains.