Summary

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In a remote old castle, a withered vampire who once reigned as the feared king of his kind now lives as a complete hikikomori. Centuries of isolation have drained his motivation; he no longer craves blood or conflict, surviving on occasional chicken blood provided by his silent, one-eyed familiar—a young girl in a maid outfit who obeys him without words. All other vampires have gone extinct, and the world now treats vampires as mere fairy tales. The man, white-haired and weary, sleeps in a gothic canopy bed atop a coffin filled with soil from his homeland, his days passing in quiet stagnation.This peace is shattered by a cheerful young saintess from a local temple. Every morning, she bursts into his room, rips open the blackout curtains, and drags him from bed with relentless energy. She believes he is a troubled recluse suffering from delusions of being a vampire, and she has taken it upon herself to reintegrate him into society despite his protests. He insists he is a vampire, but she responds with pitying disbelief, attributing his claims to a phase. Their daily exchanges follow a pattern: she arrives, he feigns agony, she scolds, he sighs, and she leaves after urging him to go outside. He cannot bring himself to fight back or prove himself—his apathy is too deep, and she holds no malice that would stir him into action.The vampire’s familiar serves as his only companion, a silent entity he has taken for granted. When he tries to teach her to speak, she reluctantly vocalizes, stating plainly that talking is dislike and troublesome. The saintess, upon meeting the familiar, mistakes her for the vampire’s granddaughter and even names her Kenzo, based on a misunderstanding of the word “familiar.” The vampire allows the error to stand, too tired to explain the truth of their blood bond.One day, the saintess returns after a day of research on vampire lore, determined to debunk his claims with garlic. She presents a basket of raw garlic, expecting him to recoil. The vampire calmly explains that garlic only startles young vampires and has no effect on higher beings like him. She grows frustrated but vows to try harder. Another day, the vampire decides on a drastic measure: he commands his familiar to bring a giant sword and declares he will be cut in half to demonstrate his regenerative abilities. The saintess, terrified that he will die, throws herself between them and pleads with him to cherish his life. She grabs his hands and insists that he is not a monster but a lonely old man who needs a place in society. For a moment, the vampire feels a crack in his certainty—could she be right? Is he merely a broken recluse clinging to a fictional identity? He quickly shakes off the doubt, but the attempt to prove himself fails. The saintess leaves, promising to find a specific workplace for him and begging him not to die in her absence.The story follows this ongoing daily struggle. The vampire is caught between his true nature as a creature of the night and the saintess’s compassionate mission. He seeks acknowledgment as a vampire, yet he also finds himself gradually adjusting to a more regular sleep cycle under her pressure. He still refuses to leave the castle, but her presence has begun to unsettle the stillness of his centuries-long retreat. The familiar, now slightly more outspoken in her distaste for conversation, remains his silent anchor. Each morning, the curtains open, he screams, and the saintess smiles—a cycle that may never break, but which continues to unfold with stubborn gentleness. The vampire cannot prove himself, the saintess cannot convert him, but neither gives up the daily ritual. In the end, the vampire remains in his castle, unchanged in circumstance but subtly affected by the warmth of her persistence.

Associated Names

Ossan Kyuuketsuki to Seijyo.
おっさん吸血鬼と聖女。
Latest Release
DateGroupRelease
2026-05-29lightnovelasia c36
2026-05-29lightnovelasia c35
2026-05-29lightnovelasia c34
2026-05-29lightnovelasia c33
2026-05-29lightnovelasia c32
2026-05-29lightnovelasia c31
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2026-05-29lightnovelasia c29
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2026-05-29lightnovelasia c26
2026-05-29lightnovelasia c25

Community Reviews

Rating(4 / 5.0, 32votes)
5 stars
9(28%)
4 stars
12(38%)
3 stars
9(28%)
2 stars
0(0%)
1 stars
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This endearing story revolves around an elderly vampire who is desperately trying to prove to a young girl that he is indeed a creature of the night. The premise is intriguing and offers a delightful mix of humor and fantasy elements. So far, the narrative has been engaging, with a charming blend of supernatural lore and lighthearted interactions. However, I must admit that I find myself frustrated with the female protagonist. Her incredibly dense and oblivious nature occasionally detracts from my overall enjoyment of the story. It can be quite exasperating to see her dismiss obvious hints and clues regarding the vampire's identity, leading to moments where I just want to shake some sense into her! Nonetheless, despite my irritation with her character, the overarching plot remains captivating. The dynamic between the old vampire and the girl has potential for growth, and I'm curious to see how their relationship will unfold as the story progresses. The author has a wonderful way of weaving humor and tension together, keeping me entertained even when I feel a pang of annoyance at the girl's antics. Overall, while there are aspects that could be improved, the narrative's charm and creativity shine through, making it a worthwhile read. I look forward to seeing how this whimsical tale develops!
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While I have given this novel a solid five-star rating, I must admit that it may be a bit premature to make such a judgment. However, I feel it's essential to address a few key points regarding this intriguing story. First and foremost, this novel should absolutely not be taken seriously. It is, at its core, a delightful slice-of-life comedy that cleverly revolves around an old, forgotten vampire who finds himself mistaken for a NEET (Not in Education, Employment, or Training) desperately in need of assistance from the Holy Saint. The absurdity of the premise sets the tone for a lighthearted and entertaining read. You may find the saintly protagonist overly bubbly and somewhat childish, often disregarding the vampire's feelings and concerns. However, this portrayal is intentional and plays into the typical stereotypes associated with young female saint characters. It's a refreshing twist that showcases the contrast between their vibrancy and the vampire's grumpy demeanor. Personally, I truly enjoy the humor woven into this narrative. It possesses a unique charm that keeps the reader engaged without overstaying its welcome. This isn't the type of novel you binge-read in one sitting; rather, it’s more suited to savoring one chapter a day, allowing the humor to unfold gradually and giving you time to appreciate the comedic timing. New characters appear to be on the horizon, promising to add further depth to the story, and I can't help but mention the adorably depicted dragon doggo—a delightful inclusion that adds a touch of whimsy to the tale. In conclusion, if you're in the mood for light-hearted entertainment with quirky characters and lots of laughs, then this novel is definitely worth a try. It has certainly earned my approval—Mango approved!
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Overall, this is a charming read with a great balance of humor and heart. The characters are memorable, the premise is unique, and the execution is crisp. I'd absolutely recommend it to anyone who likes wholesome supernatural comedies with a dash of existential dread.
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The chapter where the old man prepares tea and scones for a "final day" was clever. He tried to bribe her with hospitality before his grand stunt. But she defused the situation with care. It shows how their relationship has evolved from antagonist to something warmer.
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The saint's "duties" seem weirdly informal. She just shows up every day with no guards or oversight. It makes the world feel small and personal, which works for the story. I don't need deep politics here.
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The castle itself feels like a character – the blackout curtains, the dusty corners, the ancient furniture. The descriptions of the familiar emerging from the shadows with a sword bigger than her body show the gothic aesthetic well.
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