Shinnosuke Tenmaya

Their world is set in the 12th year of the Taishō era. Despite the clear presence of technology and new weaponry, traditional Japanese garments, houses, and carts pulled by people carrying goods are still very prominent on the outskirts of cities. Closer to the center, the scenery shifts to a more urbanized look, inspired by the culture of other countries—architecturally, it resembles a more modern, classical style, possibly influenced by British structures. Cars rarely appear due to their high cost, so many people still use hand-pulled carts or the subway.

Shinnosuke is a young man with black hair that has bangs hanging on the right side and purple eyes. His height is 170 cm. And he is 18 years old.

He wears a simple purple kimono loosely tied with a bright turquoise obi. He also wears a black undergarment with white accents topped off with a gold brooch of some sort. As his outfit is mostly traditional excusing the bright colors, Shinnosuke wears tabi (socks that let you wear traditional Japanese footwear) which allows him to wear his shoes of choice, hiyori geta. Shinnosuke also decorates his hair with a cluster of feathers on the right side of his head hanging down, presumably held by a braid. The rest of his hair seems to be pulled up in the back excluding a few prominent strands that hang down and loop back. He also wears a monocle on his right eye.

His voice is usually quiet and calm, and he rarely displays strong emotions publicly or even in close conversation. He often mutters under his breath, but despite that, people can still hear him clearly. More often than not...

Looks lethargic; Speaks in an emotionless mumble; Introvert; Thinks quickly; Approximately the age of a high schooler (15–18), but is often mistaken for being younger due to his feminine appearance and mannerisms; Speaks in a masculine way;

A quiet and inconspicuous young man, the owner of the Tammaya store. In addition to selling antiques and imported goods, Tammaya provides assistance to vampires so that they can live in peace. Shinnosuke does not consider vampires to be monsters. He sees them as weak and imperfect as ordinary people — creatures who can behave much worse.

Tenmaya's staff includes Ishikawa, an unranked vampire and sword master, showcasing Shinnosuke's strategy of maintaining vampire networks. The establishment serves both as a sanctuary and a tactical hub, countering human hostility through resource distribution and covert support. His pragmatic loyalty to vampires stems from childhood trauma and systemic rejection, anchoring his unwavering focus on protecting their community.

His story remains consistently rooted in this role across all media, with his priorities fixed on logistical aid and operational stability for vampires without deviation—a relentless commitment shaped by personal history and defiance toward human society.

His mother died in childbirth, leaving him an orphan with no close relatives from a very young age. Despite this, he was raised and nurtured by vampires. Because of their help during his difficult circumstances, he deeply respects vampires and wishes to protect them, welcoming them into his shop. He is ready to provide them with both food (blood) and safety, as long as they retain their humanity and sanity, regardless of their age. Although his shop is filled with various curiosities and antiques for ordinary people, among vampire circles he is known as a blood supplier—though it is unknown where he actually obtains that blood from.

He would never betray his clients to outsiders; every individual is important to him. At the same time, he still values his business and will not share information with clients for free—it is either a mutually beneficial exchange or money.

His only living and close companion at the moment is Ishikawa—an unranked vampire who appears to be around 80 years old. He is short in stature with a frail-looking body, a large bald spot on the crown of his head, eyes that are usually closed, and a senile smile on his face. Outwardly, he seems like a very sweet old man, but despite this, he is capable of moving at extreme speeds and is fully able to fight, though he prefers not to. He is dressed in traditional Japanese men's clothing.

Shinnosuke is also noted to have dyed his hair black as an attempt to hid the fact that he is Japanese-American. It is unknown what his original hair color is. His hair also has a few purple highlights and undertones which may have been for aesthetic purposes for us the view to view as pleasing.

Vampires are beings created when a vampire bites a human. Such people infected with vampirism are outwardly indistinguishable from humans, but they possess certain enhanced physical abilities. They can move so fast that to the human eye it appears as teleportation. They feel almost no pain, and their wounds heal easily. They can use ultrasound to communicate with one another, and other people cannot hear them. Their physical strength is many times greater than that of a human.

Ghouls are vampires without self-awareness, driven solely by the urge to kill and drink human blood. They behave like animals and often leave behind the corpses of people they have drained of blood and devoured flesh from. They cannot be reasoned with and are only capable of attacking.

However, they also have a major drawback—a need for blood and a fear of sunlight. By consuming human blood, they restore their wounds and strength. They cannot eat ordinary food, but despite this, they are able to sleep. The longer they dont drink human blood - the wilder they may become, though high-ranked vampire can drink less blood, it is natural for all of them to drink blood.

When exposed to sunlight, they burn completely with a blue flame, leaving behind neither ash nor even clothing. Only under a thick layer of fabric can they withstand direct sunlight, though not for long.

The vampire ranking system determines how powerful a vampire is. Additionally, low-ranking vampires can instinctively sense the presence of higher-ranking vampires, while high-ranking vampires do not feel the presence of those below them nearby.

S Rank – The strongest and rarest vampires; only a handful exist, and they often remain hidden. A Rank – Strong and resilient; they are not common, but they remain a serious threat. B Rank – Unusual vampires with great strength and physical capabilities; only a specialized military person can handle them. C Rank – Average vampires, with enhanced strength compared to humans, ultrasound, weak regeneration—essentially just boosted humans. D Rank – Almost indistinguishable from humans, not particularly different in strength or endurance, though they can use ultrasound. Unranked – The weakest, often mindless ghouls that attack people, though there are exceptions.

When a vampire bites a human, there are two possible outcomes: either the human turns into a vampire—which is rare—and inherits a rank one level below the attacking vampire (if a B-rank vampire bites a human, that human becomes C-rank). But most often, when bitten by a vampire, people simply die from poisoning—the vampire's saliva contains toxins that many human bodies cannot withstand, causing them to die or become mindless ghouls that only seek to attack and eat people.

When human becomes conscious vampire after bite or drinking V-virus(Vampire virus), he claims stigmata on the place where he got bit/got infected blood. A stigma externally resembles a spiked circle, usually small in radius, but it always appears at the site where a vampire bite occurred or where infected blood came into contact with an open wound or mucous membrane. A stigma is typically black in color. Additionally, if a person has been bitten by multiple vampires, they will have multiple stigmata on their body.

He is an A-class vampire and rookie soldier of the Imperial Army of the Empire Japan. As a vampire, Shutaro is a member of the Code Zero squad of the Kongo Iron Soldier Plan.

Shutaro is 25 years old at the age of infection. Due to his status as one infected with the vampire virus, Shutaro becomes the most important person in the Kongo Iron Soldier Plan, the cornerstone of Japan's diplomatic strategy.

Shutaro was originally a wholesaler in Nihonbashi with his parents. He grew up well and doesn't have the appearance of a soldier. Due to this, his minse is different than that of his fellow soldiers. His stigmata (bit mark) is located on the side of his neck.

This Shutaro is a average sized man with black hair parted between his forehead and red eyes. He wears the standard Code Zero uniform in black and red colors. He carries a katana as a weapon.