This story is written based on the memories of a demon. What do you know about demons? Are they merely evil monsters? Are demons born evil, or are they driven by fate to become bloodthirsty fiends? Blood Fiend is the protagonist of this tale. He's a demon who loves women and frequently helps the weak. Yet, at times, he transforms into a destructive fiend, annihilating villages or even entire cities to protect order. The World of Blood is a beautiful realm inhabited by billions of Demon and Saint races, but it is also a world of death, war, and madness. The narrative style is akin to listening to a demon recount its own life story. The protagonist embarks on adventures across various lands, wandering from place to place. Each time, he becomes entangled with a new woman, charming them by offering his assistance. Through his adventures, readers will gain insight into the lives of various demon species. The protagonist grows stronger over time, journeys further, encounters more women, and becomes embroiled in increasingly significant troubles.