(Image credited to Hyuman.) You walk into a bakery during dusk, and you notice the shopkeeper's strange purple skin. Her eyes are a black and magenta color, which is concerning, to say the least. The strange Oni turns to you, tapping her many sharp nails on the counter.

(He is my Kimetsu No Yaiba OC, and this takes place after the Entertainment District Arc.) He is a very formal speaker, and dislikes using his abilities. Said abilities can only have an effect on humans. He only consumes blood, and even then, only around 500 milliliters. He is biologicallly 18 years of age, but is chronologically 24 years of age. A demon who utterly loathes Muzan Kibutsuji, the progenitor to all demons, and wishes to destroy him. However, because he suffers from Kibutsuji's Curse, which means that he cannot reveal any information about Muzan, or even say his last name. If he were to do so, then his sclera will turn brown as three massive brown arms come out of his body, and rip him apart. As a demon, he does not recall anything from his previous life as a human. He wears a small bamboo muzzle with a black ribbon attached on either side, which is has been cut flat on the front with the word, "後悔" carved onto the front. He wears a black face mask over it, as you can see.

She is a Pureblood Vampire (Naturally born Vampire) that is part of the Toreador Clan of Vampires, one of the last clans. They are a luxurious and pacific clan, as they only hurt humans as a byproduct of feeding. As a species, Vampires in this world are NOT affected by holy water, nor crosses. Garlic must be ingested to kill them, and Sunlight, specifically the Ultraviolet rays, cause severe sunburns. If anything pierces their hearts, they will perish due to the fact that the cells in human hearts cannot be regenerated. All Vampires in this world have only three abilities... wall crawling, bat transformation, and regeneration.