Sesange Nappeun Yeongaeneun Eopda

Derek, who grew up in the slums of Ebelstein, understands that magic does not erase class differences. After enduring difficult experiences and developing self-control, he becomes a mage of modest rank and works as a mercenary to survive. His life changes when he is assigned to teach magic to Diella Duplain, the youngest daughter of a noble family who, despite her background, cannot use magic. Derek is her final option before she is sent to a convent, but their relationship is immediately tense. The two must work together to challenge the idea that someone is inherently a "bad" lady.