Aoi Tsubaki is the main character of Kakuriyo -Bed & Breakfast for Spirits-. She is a college student who has the ability to see Ayakashi (yokai), a trait she inherited from her deceased grandfather.
She is voiced by Nao Tōyama in the Japanese version and Emily Neves in the English version.
She has brown hair and purple eyes.
She has a caring personality but has shown she can be stubborn and brave, preferring to work to pay her grandfathers debts rather than marry Odanna.
When she was child, she is being abandoned by her mother.
Shiro, who also taught her how to cook from a young age. Her greatest regret is that she was unable to share a final meal with her grandfather and that his last meal was poor quality hospital food.
Since her grandfather's death, Aoi walks past a torii shrine, she sees an Ayakashi sitting there who announces that it is hungry. However, after giving it food, Aoi is kidnapped by the Ayakashi, an Ogre called Odanna. He takes her to the Hidden Realm, a world where all the Ayakashi live. He tells Aoi that her grandfather owed him a debt, and as compensation, she must marry him. Aoi negotiates with the Ogre instead, asking to work at the ogre's inn, the Tenjin'ya.
- Her Japanese Voice Actress, Nao Tōyama, also voiced Clair Aoki in Gleipnir, Shizuku Kurogane in Chivalry of a Failed Knight, Trish Una in JoJo's Bizarre Adventure: Eyes of Heaven, High Elf Archer in Goblin Slayer, Kongou, Hiei, Haruna, Kirishima, Atago and Takao in Kantai Collection, Rin Shima in Yuru Camp, Celica in Fire Emblem Gaiden, Lisesharte Atismata in Trinity Seven, Vatista in Under Night In-Birth Exe:Late, Nagisa Shiota in Assassination Classroom OVA, Yui Yuigahama in Yahari Ore no Seishun Love Come wa Machigatteiru, and Sasuke Uchiha as a child in Naruto: Shippuden.
- Her English Voice Actress, Emily Neves, also voiced Kumin Tsuyuri in Love, Chunibyo & Other Delusions, Kanade Tachibana in Angel Beats, Ayase Shinomiya in Guilty Crown, Minene Uryuu in Mirai Nikki, Gine in Dragon Ball Super: Broly, Eri in My Hero Academia, Chelsea in Akame Ga Kill!, Eucliwood Hellscythe in Is This A Zombie?, Saori Kido in Saint Seiya, Angelise Ikaruga Misurugi in CROSS ANGE Rondo of Angel and Dragon, Aliceliese Lou Nebulis IX in Our Last Crusade or the Rise of a New World, Umaru Doma in Himouto! Umaru-chan, Miime in Space Pirate Captain Harlock, Rayneshia El-Arte Corwen in Log Horizon, Jubei Yagyu in Samurai Girls, Saki Watanabe in From the New World, Hibiki Kuze (young) in Devil Survivor 2: The Animation, Doppel in Monster Musume, Popuko in Pop Team Epic! and Mitsuru (young) in Darling in the Franxx.