Personal Info
Birth date
-
Gender
Female
Known for
Acting
Place of birth
Aomori, Japan
Also known as
小山内 怜央
おさない れお
오사나이 레오
Reo Osanai
Biography
Reo Osanai (小山内 怜央, Osanai Reo, April 23) is a Japanese voice actress (seiyuu) from Aomori Prefecture. She is affiliated with Office Osawa.
Filmography
The Dangers in My Heart
8.6
Overview:
Kyotaro Ichikawa, a boy barely clinging to the bottom rung of his school's social ladder, secretly believes he’s the tortured lead in some psychological thriller. He spends his days dreaming up ways to disrupt his classmates' peaceful lives and pining after Anna Yamada, the class idol. But Kyotaro's not nearly the troubled teen he pretends to be…and it turns out Anna's a bit odd herself!Blue Orchestra
7
Overview:
In the fall of his third and final year of middle school, Hajime Aono, a violin prodigy, stopped playing violin for his own personal reasons. But it was also that year when he got to know a girl who told him about a high school with a prestigious school orchestra. Suddenly, the gears in the clock of Aono's life began to turn again. This is the story of a youth drama that brings forth the harmony between music and the heart!BOCCHI THE ROCK!
8.477
Overview:
Hitori Gotoh, a shy, awkward, and lonely high school student dreams of being in a band despite her doubts and worries, but when she is recruited to be the guitarist of a group looking to make it big, she realises her dream may be able to be fulfilled and come true.Oshi No Ko
8.351
Overview:
Dr. Goro is reborn as the son of the young starlet Ai Hoshino after her delusional stalker murders him. Now, he wants to help his new mother rise to the top, but what can a child do about the dark underbelly of the entertainment industry?Tower of God
8.23
Overview:
Reach the top, and everything will be yours. At the top of the tower exists everything in this world, and all of it can be yours. You can become a god. This is the story of the beginning and the end of Rachel, the girl who climbed the tower so she could see the stars, and Bam, the boy who needed nothing but her.KOWLOON GENERIC ROMANCE
7.2
Overview:
Real estate agents Reiko Kujirai and Hajime Kudo work in the nostalgic Kowloon Walled City. As they spend more time together, Reiko’s feelings for Hajime grow. But when she finds a photo of him and his former fiancée, she’s shocked to see the woman looks exactly like her. Reiko then realizes a chilling truth: she has no memory of her past.Mission: Yozakura Family
7.583
Overview:
Taiyo Asano has been on his own ever since his parents died and the only one who seems to care for him is his childhood friend and classmate, Mutsumi Yozakura. But Mutsumi has a secret—she is the head of a family of spies! And on top of that, her brother Kyoichiro is dangerously protective of her! To stop Kyoichiro from killing him, Taiyo and Mutsumi must take the ultimate leap—marriage! Because in the Yozakura family, family cannot kill family.Blue Box
8.19
Overview:
Taiki Inomata loves badminton, but he has a long way to go before he can reach nationals. When Taiki sees upperclassman Chinatsu Kano practicing her heart out on the girls’ basketball team, he falls for her hard. After an unexpected turn of events brings the two closer together, sports might not be the first thing on their minds anymore!Shikimori's Not Just a Cutie
7.8
Overview:
Shikimori seems like the perfect girlfriend: cute, fun to be around, sweet when she wants to be… but she has a cool dark side that comes out under the right circumstances. And her boyfriend Izumi loves to be around when that happens!Farming Life in Another World
7.657
Overview:
After Hiraku dies of a serious illness, God brings him back to life, gives his health and youth back, and sends him to a fantasy world of his choice. In order to enjoy his second shot, God bestows upon him the almighty farming tool! Watch as Hiraku digs, chops, and ploughs in another world in this laidback farming fantasy!Summer Pockets
7
Overview:
Hairi Takahara never expected summer to feel like a dream. Sent to Torishirojima to sort through his late grandmother's belongings, he's met with endless sea, quiet nostalgia, and mysterious girls, each chasing something just out of reach. As he settles into island life, lost memories begin to surface and he finds what he never knew he'd lost.Makeine: Too Many Losing Heroines!
8.5
Overview:
Meet the girls on the losing side of romance! First is Anna Yanami, the girl-next-door type who can’t say no to delicious food. Then there’s Lemon Yakishio, a beautiful and spirited athlete. Last but not least is Chika Komari, the cute yet shy heroine with gentle charm. Together, they navigate awkward setbacks hoping to finally find love!SHOSHIMIN: How to Become Ordinary
7.7
Overview:
Kobato decides to become an honest, humble citizen after enduring a bitter experience known as “wisdom work.” He forms a pact with Osanai, his classmate with the same goal, and they plan to enter high school leading quiet lives. But for some reason, inexplicable events and disasters keep happening around them. Will Kobato and Osanai ever manage to live ordinary, peaceful lives?The Saint's Magic Power Is Omnipotent
7.9
Overview:
Sei, a 20-year-old office worker, is whisked away to a whole new world. Unfortunately for Sei, the ritual that summoned her—meant to produce a "Saint" who would banish the dark magic—brought two people over instead of one. And everyone prefers the second girl over Sei?! But this is just fine by Sei, who leaves the royal palace to set up shop making potions and cosmetics with her newfound magic. Business is booming, and this might not be such a bad life, after all...as long as her supposed Sainthood doesn't come back to haunt her.Honey Lemon Soda
8.4
Overview:
After middle school, with its bullying and nicknames, Uka Ishimori is excited for a fresh start at Hachimitsu High School. Kai Miura, a cool and uninhibited boy, sits next to her in class. Uka remembers she met Kai in middle school and with a single word, he had convinced her to attend Hachimitsu. Though he’s popular, Kai supports Uka in her efforts to fit in with her new classmates.Flower and Asura
7
Overview:
The story is set in Tonakishima, a small island with a population of 600. Hana, a high school girl who lives on the island, loves recitals, and holds regular reading sessions for the island's children. Mizuki, the president of the Broadcasting Club, senses Hana's power to attract people through her reading and invites her to join the club. Hana joins the Broadcasting Club and experiences many firsts with the other members.KONOSUBA – An Explosion on This Wonderful World!
7.354
Overview:
This feisty young wizard will stop at nothing to master the spell that saved her life: Explosion! Megumin, the “Greatest Genius of the Crimson Magic Clan,” has chosen to devote her studies to the powerful offensive magic used by her mysterious savior. Then one day, her little sister finds a black kitten in the woods. But this cat isn’t just a new furry friend—she’s the key to awakening a Dark God!The Ice Guy and His Cool Female Colleague
6.7
Overview:
For Himuro, being a descendant of a snow spirit is tough at the workplace when your emotions can lead to snow blasts with snowmen and igloos. Any emotionally charged incident with coworkers can trigger it—conflict, fun, and in this case, romance. And with his lovely and calm coworker Fuyutsuki, he gets more frozen, literally. Get ready for a snow-white office romance that blows in like a blizzard.Senpai Is an Otokonoko
8.1
Overview:
For Makoto Hanaoka, life’s about to get more complicated. Saki Aoi, a lively girl with loads of confidence, confesses her love for Makoto one day. When he fails to reciprocate, Saki declares she will be his first love! She shares her goal with a mutual friend, Ryuji Taiga, who also confesses his crush on Makoto. Stuck in a love triangle, Makoto must find a way to make it work and have fun.Doctor Elise: The Royal Lady with the Lamp
7.759
Overview:
Making up for her sins in a past life as the evil princess Elise, Aoi Takamoto dedicates her life to saving people as a doctor. But a fatal accident cuts her atonement short, and suddenly, she's back to her previous life, 10 years before her death! Will her foresight and medical brilliance help her change her past ways and heal an ailing empire, or is fate doomed to repeat itself?Endo and Kobayashi Live! The Latest on Tsundere Villainess Lieselotte
7.1
Overview:
Endo and Kobayashi love to bicker about their latest video game fixation. They think they're simply providing color commentary, but one of the game's characters, Siegwald, can hear them talking about his fiancée, the villainess Lieselotte!A Condition Called Love
7.382
Overview:
High school freshman Hotaru Hinase has a vibrant life full of family and friendship, but not much luck in romance. That all changes when she makes a warm gesture to her handsome and heartbroken classmate, Hananoi, leading to him asking her out and her becoming flustered. Witness a girl who grapples with the enigma of love and a boy who is heavy handed with it.Cultural Exchange with a Game Centre Girl
NYR
Overview:
Kusakabe Renji, a young man working at a game centre, sees an English girl named Lily Baker playing a crane game on Valentine's Day. Seeing her fail repeatedly to win a prize, Renji can't help but take action. The day after Lily finally gets her plushie, Renji receives an unexpected message from her that reads, "Be my valentine!" What started as a misunderstanding leads to cultural exchange!Acting
2025Cultural Exchange with a Game Centre Girl (1 Episode) as Aoi Kusakabe (voice)
2025Summer Pockets (1 Episode) as (voice)
2025KOWLOON GENERIC ROMANCE (1 Episode) as Female Talent (voice)
2025Honey Lemon Soda (7 Episodes) as Yukino (voice)
2025Flower and Asura (1 Episode) as Club Member (voice)
2024Blue Box (7, 2 Episode) as Club Member (voice), (voice)
2024Makeine: Too Many Losing Heroines! (1, 1, 1, 1 Episode) as Kurumi (voice), Female Student (voice), Elementary School Student (voice), Hina Komari (voice)
2024SHOSHIMIN: How to Become Ordinary (1 Episode) as Sanae Kawamata (voice)
2024Senpai Is an Otokonoko (1 Episode) as Boy (voice)
2024BOCCHI THE ROCK! Recap Part 1 as Office Worker's Daughter (voice)
2024Mission: Yozakura Family (1, 1, 1 Episode) as Female Student C (voice), Hostess (voice), Nurse (voice)
2024A Condition Called Love (1, 1 Episode) as Boy (voice), Girl (voice)
2024Doctor Elise: The Royal Lady with the Lamp (1 Episode) as Girl (voice)
2023Oshi No Ko (1 Episode) as Social Media Voices (voice)
2023Blue Orchestra (1, 2 Episode) as First-year Student (voice), Marie (voice)
2023KONOSUBA – An Explosion on This Wonderful World! (1 Episode) as Girl (voice)
2023The Dangers in My Heart (1 Episode) as Female Student (voice)
2023Endo and Kobayashi Live! The Latest on Tsundere Villainess Lieselotte (1 Episode) as Leon Schach (child) (voice)
2023Farming Life in Another World (3 Episodes) as Roage (voice)
2023The Ice Guy and His Cool Female Colleague (1 Episode) as (voice)
2022BOCCHI THE ROCK! (1 Episode) as Office Worker's Daughter (voice)
2022Shikimori's Not Just a Cutie (1 Episode) as Female Student (voice)
2021The Saint's Magic Power Is Omnipotent (2 Episodes) as Maid (voice)
2020Tower of God (1 Episode) as Lebo (voice)
Sound
2025Cultural Exchange with a Game Centre Girl (1 Episode) ... Theme Song Performance