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Libra of the Vampire Princess: Lycoris & Aoi in "The Promise" PLUS Iris in "Homeworld"

TitleLibra of the Vampire Princess: Lycoris & Aoi in "The Promise" PLUS Iris in "Homeworld"
LengthShort (2 - 10 hours)
PublishersMiKandi Japan
Original game
Kyuuketsuki no Libra


"The Promise"

Lycoris wasn’t always a dim-witted, scythe-swinging servant of darkness; she was a well-known agent in the Rubina: a holy organization of skilled monster fighters and vampire slayers. In this scenario, we go back in time and explore the circumstances of how she and Aoi came to be formally paired together as “buddies” in the Rubina. On a deeper level, we hone in on a particularly gruesome event that would come to shape their eternal love and respect for one another—a bond which can never be broken.


Dernière, one of the many worlds that exist in different dimensions. As holders of a special power known as "life force", Dernièreans were blessed with vast energy and extended lifespans, and they lived in glorious prosperity. However, even for them the day of ruin approaches.

Taking place thousands of years before the events chronicled in Libra of the Vampire Princess, catch a glimpse of Dernière’s tragic history and the lives of those caught in the middle. You will meet Aconite Embroche, the determined leader of the Bebel’s sixth commando unit, and his smitten lieutenant, Iris Pumila. Together with Galega Officinalis, a lecherous and gifted dollmaker, they will use their superhuman powers to combat the infected life force from spreading and consuming their homeworld.

[From Steam]

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Kamishiro Aoi神代 葵
HairBlack, Long, Spiky Bangs, Straight, Violet
BodyBig Breast Sizes, Pale, Slim, Teen
ClothesBelt, Collar, Detached Sleeves, Dress Shoes, Habit, Half-Skirt, Loafers, Over The Knee Socks, Pleated Skirt, Puffy Sleeves, Ribbon Tie, Sailor School Uniform, School Uniform, Strapless Dress, Thigh-high Stockings
ItemsDagger, Dual-Wield Weapon, Sword
PersonalityAtashi, Religious, Reserved, Serious, Stubborn, Tsundere
RoleAcquaintance, Christian Nun, High School Student, Hunter, Roommate, Spy, Transfer Student
Engages inFighting, Religion
Subject ofTeasing
Voiced byTezuka Ryouko


An agent of the Vatican's Special Service Agency "Rubina." She came to town with Lycoris, after getting information that an important vampire is there.

Aoi is one of a few people who can communicate directly with God. She has spent her whole life killing monsters, it is the top priority order assigned to her. Aoi prefers physical work over cognitive thinking and focuses on things in the moment without considering the future.

Her specialty is a combination attack with two swords, using her above average physical ability. Her purpose is freeing her partner Lycoris who became Iris's familiar spirit, so she will move together with Shuuma for a while.

[From Prefundia]

Main characters

Side characters