Ryoma and the New Acquaintance Back at the shop, Ryoma learns that one of his cleaning slimes started eating charcoal and realizes that it is about to evolve into another type. With his shops in good hands, Ryoma decides to focus on increasing his adventurer rank and accepts a delivery job in the city of Keleban, which will soon open a fair of magical artifacts. While completing the delivery, Ryoma meets Serge again and is given a prototype magic tool which he uses as a base to create a music box. Ryoma is surprised when Serge reveals that there is no such item in the market and is certain that nobles will buy it. As such, they begin making plans to mass produce it.