"Nolbu and Heungbu" is a traditional Korean folktale that tells the story of two brothers with contrasting personalities. Nolbu is greedy and selfish, while Heungbu is kind-hearted and generous. The tale explores themes of morality, fortune, and the consequences of one's actions. In the story, Heungbu helps a wounded swallow, which later rewards him with wealth. In contrast, Nolbu tries to exploit the situation for his gain but faces misfortune instead. The narrative serves as a moral lesson about the virtues of kindness and the pitfalls of greed.