Beloukas/Chronology

Volume 1
Just as Naofumi finishes dealing with a group of thugs who meant to rip him off, he is approached by Beloukas, who proposes a method of forcibly making others part of his party and magically guaranteeing their undying loyalty: slavery. Bought by the Trader's words and logic, Naofumi is led back to his place of business as Beloukas explains he originally planned to enslave Naofumi, but after meeting him, he decided that he'd rather have him as a client.

After initially showing Naofumi a high-level Beastman Slave, he takes Naofumi to see his cheapest slaves at Naofumi’s request. He shows Naofumi his three cheapest Slaves, and Naofumi seems to settle for the worst of the lot: a sickly Tanuki girl named Raphtalia. Beloukas sells Raphtalia's slave rights to Naofumi for thirty-one silvers (thirty being the actual price plus one as a commission for the Slave Crest) before the Hero was on his way off.

Volume 2
Naofumi returns to the Slave Trader's tent with a now free Raphtalia in tow, explaining that Raphtalia forcibly had her Slave Crest removed and now they need a new one. Surprised to see how much Raphtalia had changed, as soon as the ritual was complete, Beloukas attempted to buy her back for 20 gold, 35 when he learned that she was still a virgin.

Dismissing Beloukas's offer, Naofumi's attention instead went to a nearby Monster Egg Raffle, apparently the trader's day business. On a whim, Naofumi bought one egg from the raffle for a hundred silvers. A few days later, Naofumi came back with the newly-hatched monster, a Filolial named Filo, demanding to know why she had stopped listening to Naofumi.

After confirming the rate of her growth, and that she was a filolial, Beloukas theorized that Filo was a Filolial Queen and immediately offered to buy her back for an absurd amount when Naofumi refused, he then explained that he would need a high-grade Monster Seal to make the bird listen to him again. He volunteered to experiment Filo for free but was again dismissed. He also asked Naofumi to raise other monsters for profit, which was declined as well.

Volume 12
Naofumi found out that the slave trader was dealing with his slave behind his back. He advised them to registered the monster eggs which they found under Naofumi, so that they may raise to be powerful.