Young Merchant

The Young Merchant (青年商人 Seinen Shōnin) is a cunning business entrepreneur whose goal is to expand his fortune simply. He uses the Demon King's exploits as a means too. Eventually, he learns from the Hero about his and the Queen's plan and agrees to help them while taking the opportunity to line his pockets further.

Relationships
Demon King/Crimson Scholar: Attracted to her beauty and won over by her intelligence and creative mind, the young Merchant had shown a strong interest in her to the point of asking for her hand in marriage after their first meeting. He continues to think about her and will use any excuse to visit her. His shrewd character allowed him to notice that the person he was meeting with in episode 7 was not the Crimson Scholar, but the older sister maid when she was told by the Crimson Scholar herself to wear a fairy ring to pretend to be the Crimson Scholar when she was away.