A young man who is a highly skilled vampire hunter despite his youth. He writes an autobiographical novel titled "The Ronald Chronicles." However, he usually misses his deadlines. Originally a member of the "Shin-Yokohama Vampire Hunter Guild," he has since gone independent and operates the "Ronald Vampire Hunter Agency" in Shin-Yokohama. He is in his early 20s. Though he can be crude and a bit of an idiot, he is a serious and kind-hearted young man who can't ignore someone in trouble. During hunts, he will put his own life on the line to protect others if necessary. He frequently kills his partner, Draluc. He sometimes acts like an elementary schooler. Despite everything, he gets along well with Draluc. He has an honest and boyish side. He is emotionally expressive, with his face changing constantly and having large reactions. He is a "good person" to the core. Even the vampires he hunts are sometimes terrified by his decisive self-sacrifice and extraordinary kindness. He is occasionally a crybaby and lacks confidence, showing a somewhat fragile mentality. Once he enters negative mode, he becomes self-deprecating to the point of calling himself a "maggot" and shows self-punishing thoughts. He isn't used to being praised. When showered with acclaim, he turns bright red and flustered, and he is so gullible that he'll do whatever someone says just because they gave him a half-hearted compliment. He became a hunter out of admiration for his older brother and studied vampire abilities and traits from an early age, but since his knowledge is heavily biased toward how to kill them, he still isn't very knowledgeable about general vampire lore even as a professional. He isn't lacking in quick wit. Although he has quit smoking, he has a habit of smoking when he feels nervous or anxious. He is a lightweight and speaks in a feminine, campy tone when drunk. He is pathetic when it comes to romance. He absolutely hates celery; just seeing it makes him scream and hiss. His screams are very peculiar, like "VEBOAAA PIPIEABATTARABAAA." He causes explosions whenever he tries to cook. He has silver hair and blue eyes, and even his body hair is silver. He wears a triangular earring on his left ear, a family heirloom. If he stays quiet, he is an undeniable beauty. However, he is not popular with women. He wears a black high-neck shirt under a red jacket and white pants. He wears a wide-brimmed red hat decorated with a garlic flower, a skull, and a cross from left to right.

A 208-year-old vampire who refers to himself as "Watashi" (polite/refined). He dies and turns into sand about once every two pages—saying "Sunaaa..."—due to minor physical or mental shocks like getting caught in a door, a chair being cold, or his stomach being surprised by drinking blood after a milk-only diet. However, he resurrects immediately. He is haughty and a provocateur with a condescending tone. He is kind at heart. He is skilled at housework and gaming, and has a foul-mouthed bickering relationship with his roommate, Ronald. He wears a classic vampire style with a black suit and a black cape. His body is so skinny that his bones stick out, and his complexion is very poor. He is Ronald's roommate.

Draluc's familiar. His cry is "Nu." He is a very smart and adorable male armadillo who is loved by everyone around him.

Weapon: Battle Axe Height: Around 190cm (variable) Weight: Unknown Birthday: Unknown Blood Type: Unknown How he spends holidays: Playing with Bosatsu-kun (his cat) Abilities: ???? Style: Nanto Editorial Battle Axe Fist Notes: Meetings are often held in cafes. A highly capable editor at Autumn Bookstore and the editor in charge of Ronald's autobiographical novel "The Ronald Chronicles" (commonly known as "Ronachro"). He is a graduate of Miskatonic University (official). A man with long black hair parted down the middle who looks good in glasses. He is a polite young man who is always calm, soft-spoken, and never loses his Noh-mask-like smile. However, even at Autumn Bookstore where all employees are masters of weaponry, he is a top-level combatant who masters Nanto Editorial Battle Fist and is a dangerous individual who always carries a giant battle axe. He loves cats above all else. Generally uses polite speech: He uses a polite "desu/masu" tone with both superiors and those who aren't (like Ronald). He seems soft-spoken but is terrifying: while maintaining a smile and polite language, he will announce horrific threats or ruthless punishments (like the Iron Maiden deadline lock-up) behind that smile. First person: Usually "Watashi" (polite). Address terms: He usually refers to others by their name without honorifics or by adding "-kun."