[Underworld + first-person narration + power fantasy + no harem] The legend of “Black Blade Dragon” has long circulated through the underworld. They say that back in the day, Black Blade Dragon took a black machete and led a dozen brothers into a bloody battle against three thousand men without giving ground! They say Black Blade Dragon once trashed an entire school for a woman! They say that, at the beginning, Black Blade Dragon was just an ordinary student! There are all kinds of stories about him, and this one begins with a heroic rescue on a certain night!
