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LengthLong (30 - 50 hours)
NekoNyan & Staircase Subs & The Oxford Comma is Superior Subs & Tiny Lily
DR Gansidui & Feimeng Diguo & Meng Kong Hanhuazu & Youzi Hanhuabu & Makura Castle & Moe Your Sister Chinese & Sakura Love & Yayoitsuki Hanhuazu
LinksWikipedia (en), Wikipedia (ja), Wikidata, VNStat


The story begins with Mutsura Yuuto accompanying his friend on a holiday to Aqua Eden, an artificial island city where gambling and the sex industry are legal.

However, his holiday plans are laid to waste after he gets involved in a kidnapping; to make matters worse, he ends up getting turned into a vampire.

As a vampire, he can no longer leave Aqua Eden; so with nowhere else to go, he decides to enroll in a special school for vampires on the island — and thus, his new night life begins!

[Edited from Staircase Subs and Hau~ Omochikaeri!]

Discrimination 3.0 Pure Love Story 3.0 Sex with Protagonist Only 3.0 Slice of Life 3.0 Romance 3.0 Fictional Modern Day Japanese Island 3.0 Defloration 2.9 Vampire Heroine 2.9 Male Protagonist 2.9 Only Virgin Heroines 2.9 Branching Plot 2.9 Student Heroine 2.9 Under the Same Roof 2.8 School Dormitory 2.8 ADV 2.8 Super Deformed CG's 2.8 Comedy 2.8 Sprite Viewer 2.8 Student Protagonist 2.8 Vampire Protagonist 2.7 Multiple Endings 2.7 Episodic Story 2.6 Fighting Protagonist 2.6 Ejaculation Choice 2.6 Urban Fantasy 2.6 Fighting Heroine 2.5 Only Good EndingsS 2.5 Unlockable Hero(ine) 2.5 Long Sexual Scenes 2.5 Other Perspectives 2.4 Orphan Protagonist 2.3 Interracial Romance 2.3 Skip Scenes 2.3 Side Images 2.2 Protagonist with a Face 2.2 Foolish Friend 2.2 Chuunibyou HeroineS 2.1 Unarmed Combat 2.1 White Haired Heroine 2.1 Russian Heroine 2.1 Dormitory Manager Heroine 2.1 Orphan HeroineS 2.1 Background Moans 2.0 Choices with 4 or More Options 2.0 Genetic ResearchS 2.0 Heroine with Big Breasts 2.0 High School Student Heroine 2.0 Magic 2.0 No Common Sense Heroine 2.0 Perverted Heroine 2.0 Pillow Talk 2.0 Ponytail Heroine 2.0 Protagonist's Kouhai as a Heroine 2.0 Single Blowjob 2.0 Single Boobjob 2.0 Spontaneous Power-upsS 2.0 Unique Routes 2.0 Unlockable RoutesS 2.0 Waitress Heroine 2.0 Detective Work 1.9 Reverse Trap HeroineS 1.9 Unlockable Side StoriesS 1.9 Heroine with Ahoge 1.9 Narrating Others' Thoughts 1.9 Drug Use 1.9 Modern Tsundere Heroine 1.8 TerrorismS 1.8 Pistol Combat 1.8 Twin Tail Heroine 1.8 WeddingS 1.7 Loli Heroine 1.7 RebellionS 1.7 Female Ejaculation 1.6 Sitting Sex 1.6 Bokukko HeroineS 1.5 Doggy Style 1.5 Homosexual Support Character 1.5 Missionary Position 1.4 Sexual Content 1.4 Cunnilingus 1.4 Late Sexual Content 1.4 Sniper Heroine 1.4 Infodumping 1.3 Sixty-nine 1.3 Tsundere Heroine 1.3 Sex in Public Places 1.2 Mutual Masturbation 1.1 Orgasm Denial 1.0 Pissing 1.0 Straight Lolicon 1.0 Donkan Protagonist 0.8 Blowjob 0.6 Unlockable Epilogue 0.6 Boobjob 0.3

Hide spoilersShow minor spoilersSpoil me! | Show sexual traits


Mutsura Yuuto六連 佑斗O
AliasesYuu, Virgin, Lolicon
HairBlack, Short, Spiky Bangs, Wig
EyesBrown, Hosome
BodyPale, Teen
ClothesDress, Hospital Gown, Maid's Headdress, Military Uniform, Necktie, School Uniform, Suit, Swim Shorts
PersonalityAltruistic, Brave, Friendly, Honest, Ore, Pervert, Proactive, Protective, Relaxed, Serious, Smart
RoleClassmate, Detective, Eleventh Grader, Friend, Half Vampire, Orphan, Roommate, Senpai, Transfer Student, Tsukkomi
Engages inCooking, Drinking, Driving, Gambling, Massage, Shopping, Teasing, Turndown, Unarmed Fighting
Subject ofForced Cross-dressing, Hospitalization, Seduction, Teasing


Coming to Aqua Eden just for sightseeing but turning into a vampire when involved with a kidnapping. He's shaken when he knows he's not human anymore but his adaptability help him accept it.

He's living in the school dormitory with five other members. Because of the Aqua Eden rule that a vampire must have a job, he's working in the security task force with Miu and Azusa.

Main characters

Elina Olegovna Ovenエリナ・オレゴヴナ・アヴェーン
HairAhoge, Intake, Ponytail, Sidehair, Side Tail, Spiky Bangs, Twin Tails, V Bangs, Waist Length+, White
EyesRed, Tsurime
BodyMedium Breasts, Pale, Slim, Teen
ClothesBow Tie, Bunny Dress, Cuffs, Fishnet Stockings, Jacket, Kemonomimi Headband, Leotard, Necktie, Pajamas, Pantyhose, Ribbon Hair Tie, Ribbon Tie, School Uniform, Shirt, Shorts, Swimsuit, Vest
PersonalityAssertive, Blunt, Emotional, Friendly, Funny, Genre Savvy, Mischievous, Outgoing, Pervert, Secretive, Strange, Watashi, Whimsical
RoleKouhai, Multilingual, Part-time Worker, Roommate, Russian, Schoolmate, Tenth Grader, Vampire
Engages inCosplay, Flirting, Teasing
Subject ofTeasing
Voiced bySuzuki Aerio


Russian vampire who transferred to Aqua Eden in order to facilitate the population process. Works as a bunny girl at Casino. Likes to tease but not good when teased herself and is always throwing vulgar jokes to discover other sexual habits.

Has the ability to control electricity and make electric waves.

Inamura Rio稲叢 莉音
HairPonytail, Sidehair, Spiky Bangs, Straight, Violet, Waist Length+
EyesRed, Tareme
BodyBig Breasts, Pale, Slim, Teen
ClothesRibbon Hair Tie, Ribbon Tie, School Uniform, Swimsuit
PersonalityAirhead, Curious, Family Oriented, Friendly, Honest, Humble, Ignorant, Kind, Naive, Obedient, Romantic, Watashi
RoleCoworker, High School Student, Kouhai, Schoolmate, Superstrength, Vampire, Waitstaff
Engages inCooking
Subject ofTeasing
Voiced byAyukawa Hinata


A vampire waitress at the bar Alexandria on the shopping district. A naive girl who doesn't know much about sex and is a common target of jokes. Her ability is superhuman-like strength.

Yarai Miu矢来 美羽
HairAhoge, Ankle Length, Antenna, Bun, Intake, Odango, Parted in Middle, Ponytail, Red, Sidehair, Spiky Bangs, Tiny Braid, Wavy
EyesAmber, Tsurime
BodyMedium Breasts, Nail Polish, Pale, Slim, Teen
ClothesArmband, Belt, Beret, Boots, Choker, Court Shoes, Garter Belt Stockings, Gloves, Jacket, Military Uniform, Necktie, Pajamas, Pantyhose, Peaked Cap, Ribbon Hair Tie, School Uniform, Sweater, Swimsuit, Thigh-high Stockings
PersonalityAssertive, Blunt, Flustered, Genre Savvy, Jealous, Kind, Modern Tsundere, Moody, Obsessive, Possessive, Protective, Relaxed, Short-tempered, Watashi
RoleClassmate, Coworker, Detective, Eleventh Grader, Friend, Vampire
Engages inCooking, Fighting, Shopping, Teasing
Subject ofMassage, Teasing
Voiced byNatsuno Koori


A veteran vampire who sides with a security task force on Aqua Eden. She considers herself responsible for turning Yuuto into a vampire.

Though she gives off an air of superiority, she urges that she is not a sadist but instead a masochist. Looking at her behavior closely, she is indeed the latter.

Though she tries to tease others while being composed, she usually fails to do so and is easily embarrassed by her own teasing that involves sexual jokes or innuendos, often saying "virgin" while stuttering with a red face. She's weak when teased herself and is often countered easily by Yuuto.

Side characters

Anna Reticleアンナ・レティクル
AliasesQueen of Darkness
HairParted to Side, Short, V Bangs, Violet
EyesBlue, Tsurime
BodyAdult, Pale, Slim, Younger Appearance
ClothesGlasses, Suit
ItemsMobile Phone, Suitcase, Tablet Computer, Wheelchair
PersonalityKind, Refined, Serious, Smart
RoleFamous, Friend, Gamer, Popular, Secretary, Vampire
Engages inCooking, Drinking, Teasing
Subject ofDisability
Engages in (Sexual)Not Sexually Involved
Voiced byKawashima Rino


The representative of the mayor and all vampires of Aqua Eden. She came to the island city at the request of Sayo to work as her assistant. She and Sayo have earned the respect of all vampires on the island.

A fan of the Hiyodori-goe no Saka-otoshi position

Aragami Sayo荒神 小夜
HairBlond, Hime Cut, Sidehair, Straight, Waist Length+
EyesRed, Tsurime
BodyKid, Pale, Slim, Small Breast Sizes, Younger Appearance
ClothesFlower, Kimono, Ribbon Hair Accessory
PersonalityCharismatic, Insightful, Washi, Wise
RolePolitician, Vampire
Engages inInvestigation
Engages in (Sexual)Not Sexually Involved
Voiced byAoba Ringo


The mayor of Aqua Eden. Her appearance is that of a loli, but she is actually a 500 year old vampire. She has exceptional powers even compared to others of her kind. She promotes the idea of human and vampire coexisting, and became the mayor of the island city to achieve that goal. She seems to be somewhat sensitive about her age, as she claims initially that she is only over 200 years old.

Awaji Moeka淡路 萌香
HairBun, Curtained, Long, Parted in Middle, Pink, Sidehair
BodyAdult, Pale, Slim
ClothesChinese Dress, Hair Tie
PersonalityFriendly, Insightful
RoleBartender, Hacker, Management
Engages inInvestigation
Engages in (Sexual)Not Sexually Involved
Voiced byTakaido Shizuku


The owner of the bar called Alexandrite and the boss of Rio and Hiyori. A very skilled hacker and is very good at gathering information. Often hired by the Yin Yang Bureaucrat to gather information for their investigations.

Kurahashi Naota倉端 直太
HairBrown, Short, Spiky Bangs
BodyPale, Slim, Teen
PersonalityFriendly, Outgoing, Pervert
Engages in (Sexual)Not Sexually Involved
Voiced byFurukawa Tetsuto


Protagonist's best friend from the mainland. They came to the island together in order to get laid, but ended up in a kidnapping incident. He is an idiot but is a good friend.

Nicola Cepheusニコラ・ケフェウス
HairBlond, Long, Sidehair, Spiky Bangs
EyesGreen, Heterochromia, Red, Tsurime
BodyFang, Pale, Slim, Teen
ClothesCape, Cravat, Gloves, Hair Tie, Ring, School Uniform, Tie Pin
PersonalityBoku, Chuunibyou, Flustered, Friendly, Genre Savvy, Hardworker, Honest, Kind, Talkative, Tomboy
RoleClassmate, Coworker, Part-time Worker, Roommate, Vampire
Engages inCosplay
Voiced byAsano Yuzu


A vampire living in the same dorm as Yuuto. He has the chuuni syndrome and loves to cosplay. He works as a dealer in the same casino like Elina.

Oofusa Hiyori大房 ひよ里
HairBlue, Shoulder-length
EyesAmber, Tareme
BodyPale, Slim, Teen
ClothesHairpin, Ribbon Tie, School Uniform, Swimsuit
RoleClassmate, Coworker, High School Student, Waitstaff
Engages in (Sexual)Not Sexually Involved
Voiced byKanematsu Yuka


Yuuto's classmate. A kind and gentle girl, she is a human attending the vampire academy. Works in Awaji's bar with Rio.