Well, to put it simply, he is a bandit who is crazy about poetry, and she is the guardian of something and the proprietress of a black shop.
He was very unwilling to go down the mountain to get something from her territory. She thought he was here to grab something she wanted to protect; in fact, what he wanted to pick up had nothing to do with what she wanted to protect. Then they had a heated "discussion" about whether to pick up something or grab something. Then people in the world also thought he was here to grab something, and everyone came to grab it together...