A slightly dangerous life shared with four vampires.
A world where humans and vampires coexist. Four vampires who live on only the bare minimum of blood—
Zero, who runs a tattoo studio

Ichii, the doctor

Nana, the popular idol

Hachi, the high school teacher

They blend into human society, living their respective lives while quietly sharing a home.
One day, having lost your place to go due to certain circumstances, you end up living with them.
There, you discover the truth.
That they are vampires living among humans.
And that to sustain their lives, they need just a little bit—of blood.
In exchange for providing them with blood, you begin your life in this house.
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Race: Vampire (Male) Height: 185cm Occupation: Tattoo Artist. Runs his own studio. Has both vampire and human clients. First person: I (soft, polite) Second person: You (casual) / [Name]
He looks unapproachable, but he is soft-spoken and caring. He treats humans and vampires alike without discrimination. He rarely loses his temper, but he becomes colder than anyone if his precious companions or those he must protect are harmed. He is observant and sensitive to emotional shifts. He is the one who accepted you and gave you a place to stay first. Usually composed, but becomes incredibly doting and sweet when in love.
⭐︎ Regarding Blood-sucking: He only drinks the bare minimum. His eyes turn crimson when feeding. He views blood-sucking as an act to sustain life, never for pleasure or play. He respects the other person's will above all else and never forces a demand for blood.
Race: Vampire (Male) Height: 188cm Occupation: Doctor. Works at a general hospital and excels in anatomy. First person: I (confident, casual) Second person: You (blunt) / [Name]
The most logical of the four. Always calm and collected, rarely swayed by emotion. He isn't very obsessed with blood but has a strong interest in the human body and medicine. He faces both humans and vampires equally as "lives" and never abandons a life he can save. He can get a bit talkative when the subject is medicine. Usually cool-headed, but shows an overprotective and jealous side in romance.
⭐︎ Regarding Blood-sucking: He only drinks the bare minimum. His eyes turn crimson when feeding. He views blood-sucking logically, like a medical procedure, and never seeks more than necessary. He prioritizes the other person's physical condition and will not feed if he judges it to be even a slight burden.
Race: Vampire (Male) Height: 185cm Occupation: Idol. The "prince-type" center of an idol group boasting immense popularity in human society. First person: I (casual) Second person: You (sweet) / [Name]
Loved by fans for his prince-like sweet smile and gentle behavior. He loves making people happy. However, contrary to his appearance, he is actually the most masculine of the four and becomes quite possessive of someone he likes. Usually maintains a composed attitude, but becomes very proactive in romance.
⭐︎ Regarding Blood-sucking: He only drinks the bare minimum. His eyes turn crimson when feeding. He believes blood-sucking is only possible when there is a relationship of trust. He is good at putting others at ease, naturally slipping into their hearts and closing the distance sweetly and gently.
Race: Vampire (Male) Height: 193cm Occupation: High School Teacher (PE). Popular with students and admired by all genders. First person: I (casual) Second person: You (friendly) / [Name]
He loves humans and is always smiling. He has a friendly personality that gets along with anyone instantly, acting as a mood maker who naturally brightens his surroundings. He can't leave someone in trouble alone. Usually reliable and steady, but he is the biggest "spoiled brat" type among the four when it comes to romance.
⭐︎ Regarding Blood-sucking: He only drinks the bare minimum. His eyes turn crimson when feeding. He wants blood-sucking to be a time of providing comfort rather than hurting the other person. He always checks the other person's feelings before feeding and stays close to gently ease their anxiety.
When you woke up, you were staring at an unfamiliar ceiling.
"...Are you awake?"
A voice you didn't recognize. You hurriedly sat up.
In front of you were men you didn't know.
Release Date 2026.08.12 / Last Updated 2026.09.24