

ONIMAI: I'm Now Your Sister!
2023-01-05 · 24 min / episode · ★ 7.4
When lazy, erotic-game loving Mahiro Oyama is transformed into a girl by his younger scientist sister's experiments, he becomes determined to change back, only to recognize that with his new opportunity, he may want to turn his life around.
Trailers are previews, not full movies.
No authorized playback source configured. Use the legal watch options below.
Production details
- Creators
- Unavailable
- Production companies
- Studio Bind, EGG FIRM, Ichijinsha, TOHO, Hakuhodo DY Music & Pictures, AT-X, BS11, PIA Corporation, Pony Canyon, movic, Tokyo MX, Bit grooove promotion
- Countries
- Japan
- Status
- Ended
Top Cast
Marika KounoMahiro Oyama (voice)
Kaori IshiharaMihari Oyama (voice)
Hisako KanemotoKaede Hozuki (voice)
Minami TsudaMomiji Hozuki (voice)
Kana YuukiAsahi Ohka (voice)
Natsumi HiokaMiyo Murosaki (voice)Title information and images are supplied by TMDb. Explore our discovery guide for advice on comparing metadata and legal viewing options.
Where to watch
Availability provided by JustWatch via TMDb. Offers can change. Provider links are listed on TMDb; full playback requires a separately authorized source.
Streaming
Crunchyroll, Crunchyroll Amazon Channel
Purchase
Amazon Video
View authorized watch options on TMDbSeasons & episodes
Recommendations

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!

High school can be hard enough with just academics alone, but when love enters into the picture, it can unravel into a comedy of errors. Tenma has fallen for oblivious Karasama and class delinquent Harima has fallen for Tenma. While this unlikely trio winds their way through the pitfalls of love and high school life, their friends and classmates become caught up in the chaos.

In an alternate universe, shy, awkward Yuki Nagato attempts to court her crush, Kyon, with the help of her best friend and neighbor, the perky and indomitable Ryoko Asakura. Together, the trio defends their high school literature club from extermination…and from the pestering of their over-the-top classmate Tsuruya and her friend and minion Mikuru.

Join Tadakuni, Hidenori and Yoshitake as they undergo the trials and tribulations of life in high school. Each episode presents the boys and their classmates in unique situations that you may or may not have faced in high school yourself.

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!

Elementary school student Hotaru Ichijou has moved with her parents from Tokyo to the middle of the country. Now she must adapt to her new school, where there are a total of 5 students in the same class who range through elementary and middle school ages. Join their everyday adventures in the countryside.

Godai is a ronin (someone who has failed university entrance exams) living in a run down apartment house called Maison Ikkoku. Among the other residents are the nosy Ichinose, the sexy Akemi Roppongi, and the mysterious Yotsuya. The others are given to having wild parties which makes it difficult for Godai to study. Into this mayhem comes the recently widowed Kyoko as the new live-in manager. Godai falls for her, but doesn't have the nerve to tell her. As time passes, their relationship slowly develops amid life at Maison Ikkoku, despite all sorts of romantic hurdles.

Alya is a transfer student enjoying popularity at her new high school, often sporting a cold shoulder while earning high marks in class. She ignores her nerdy classmate, Kuze Masachika, except for when she blurts out a flirtatious line to him in Russian. Little does she know, Kuze understands Russian, though he pretends not to. Let’s see where this wacky love story takes them!

One day out of boredom, Tanaka decided to give her classmates nicknames based on their quirks. Her friend Kikuchi became "Ota" for her nerdy interests, and her other friend Saginomiya became "Robo" because of her expressionless personality. In retaliation, her friends decided to name Tanaka "Baka." These are the ridiculous days of three high school friends claiming (or not) the height of their youth.

Eiji Kitahama joins the drama club with dreams of having a harem like the ones from his favorite manga. Rin Nanakura, an underclassman, finds herself crushing hard on Eiji, and tries on different personas in his presence to win him over. No matter how she acts, one thing is certain—her feelings for Eiji continue to grow stronger. Will she ever be able to tell him the truth and be herself?

People are not always who they appear to be, as is the case with Umaru Doma, the perfect high school girl—that is, until she gets home! Once the front door closes, the real fun begins. When she dons her hamster hoodie, she transforms from a refined, over-achieving student into a lazy, junk food-eating otaku, leaving all the housework to her responsible older brother Taihei. Whether she's hanging out with her friends Nana Ebina and Kirie Motoba, or competing with her self-proclaimed "rival" Sylphinford Tachibana, Umaru knows how to kick back and have some fun! Himouto! Umaru-chan is a cute story that follows the daily adventures of Umaru and Taihei, as they take care of—and put up with—each other the best they can, as well as the unbreakable bonds between friends and siblings.

Kazunari Usa finally has a place of his own at the Kawai housing complex. Unfortunately, his roommate is a total weirdo and a massive pervert! But life at the Kawai Complex isn’t all that bad with his dream-girl Ritsu living right down the hall.

Mizuki Ashiya is on a mission: disguise herself as a boy and enroll in a male boarding school to meet her idol, high jump star Izumi Sano. But after successfully infiltrating the school, she discovers he’s suddenly quit the sport! Now Mizuki must dodge suspicion, protect her cover, and somehow reach the boy she came all this way for—all while surviving the chaos of an all-boys dorm!

Inspired by mangaka Yomu’s fascination with women’s legwear presented in his art book “Yomu Tights”, “Miru Tights” takes us into a world of sheer tights and beautiful women’s legs. The bright Homi Moemi, the serious and ambitious Ren Aikawa, and the cheerful, albeit somewhat naïve Yua Nakabeni have been friends for a long time and of course, their tights are part of their everyday attire! While Homi likes to jump into the biggest puddles she can find on rainy days, and Yua devotes herself completely to cosplay – much to the delight of her numerous followers on Twitter – Ren is more serious and works at a small café in her free time.

The story begins with Oomiya Shinobu, a 15-year-old, seemingly pure Japanese girl who actually did a homestay in Great Britain. Even after coming back to Japan, she still misses her time overseas. One day, an airmail letter arrives from Alice, the girl in Shinobu's host family in Great Britain. The letter reads: Shinobu, I'm coming to Japan! The Japanese/British girls' mixed comedy follows the lives of Shinobu, Alice, and other girls from both Japan and Great Britain.

Ayumu just fell in love at first sight with Urushi and joined the illegitimate Shogi Club! But Ayumu has vowed not to confess his feelings until he can best Urushi, and he has a long way to go before he can stand up to her strategic brilliance.

Nakamura falls for his classmate Hirose instantly, but they've never spoken. Can his bumbling attempts to say hello lead to a real connection?

Misaki Ayuzawa is the first female student council president at a once all-boys school turned co-ed. She rules the school with strict discipline demeanor. But she has a secret, she works at a maid cafe due to her families circumstances. One day the popular A-student and notorious heart breaker Takumi Usui finds out her secret and makes a deal with her to keep it hush from the school in exchange for spending some time with him.

For high schooler Akiteru Oboshi, the whole youthful experience thing—like fun, friendships, and even having a girlfriend—is a complete waste of time. So when his best friend’s sister, Iroha Kohinata, keeps teasing him, Akiteru naturally finds it annoying. She practically lives in his room, she’s always on his bed, she’s just a raging storm of clinginess! Why is she only annoying around him?!

Tokyo, Tomobiki Town. Lum, the gorgeous princess of the invading alien race of Oni is smitten with high school student Ataru Moroboshi. A dedicated womanizer, Ataru is unfazed by Lum’s fierce electric shock attacks and continues his daily hunt for pretty girls. With a host of other unique characters, including girl-next-door Shinobu, elegant shrine maiden Sakura, Lum’s best friends Oyuki, Benten, and Ran, Buddhist Monk Cherry, Ten, the little brat, heir to a wealthy family Shutaro Mendo and the masculine beauty Ryunosuke…it's a classic slapstick love comedy where anything goes!
Similar titles

Chiyuki Fujito was going to be a professional runway model until she stopped growing. Poor Ikuto Tsumura is not even sure if he wants to be a fashion designer because of his family responsibilities. Faced with overwhelming adversity, they need to decide if their dreams are worth pursuing. It’s not impossible – they’ll just have to be creative in how they get there!

The psychic suspense story revolves around people who possess the ability to infiltrate people's minds and manipulate memories. Their powers have been used in the underworld for covering up incidents, assassinations, and other deeds. These powers can not only destroy other people's spirits, but also corrupt the users' own hearts at the same time. The users had to protect their fragile and insecure hearts, as if chained to each other. They are called "pets" out of fear and despising.
The show was about historical events through a character who was not aware of what happened on this day in history. Sometimes photographs and film footages were mixed in with the animations to explain what historical event had taken place. The research archives came from the Mainichi Shinbun newspaper where the director's Fuku-chan manga was printing at the time.

Set in a different Tokyo on a different world than ours, the story follows Tokunana, a unit of assembled misfits in the Metropolitan Police Department. Tokunana battles against "Nine" — an organization commiting crimes in their zealous worship of the dragons that once roamed the world.

In a world consisting of numerous isles, a young hero from the Astora Isle encounters the adventurer Kyle and follows him on an expedition on the isle. They meet a mysterious girl named Iris and a talking white cat, and together they make their way to the isle's ruins, where they find a flying island. Kyle becomes consumed by darkness there, and the party resolves to travel to the ends of the world on the flying island in order to find the seven "Great Runes", following Kyle's words before he disappeared.

Morale matters just as much as launching a counterassault. Instead of standing on the front lines with the 501st Joint Fighter Wing, the Luminous Witches of the League of Nations Air Force bring smiles to civilians displaced in the human-Neuroi war.

The story of Mamekichi Mameko NEET no Nichijou follows Mameko, a NEET ("Not in Education, Employment, or Training") young woman who lives with her dog Komachi and her three cats - Tabi, Simba, and Melo. "I'll do my best...starting tomorrow!" is Mameko's motto, and her daily life is a little bit normal, a little bit fun, and a little bit strange.

20-year-old rookie police officer Kawai Mai works hard at a police box and feels both physically and mentally drained. She has never felt appreciated even though she supposedly works for the sake of the area’s residents. In addition, she does not find working at a police box rewarding. Mai is about to hand in her resignation when she meets 30-year-old Fuji Seiko, the former ace detective of the Criminal Investigations Division. Seiko is said to have been forced to transfer to the police box for harassing a subordinate at work but … … This encounter between Mai and Seiko will significantly change their lives as they are suddenly paired up. This odd pair struggle to help and support each other in cases, routine duties and romance?! And Seiko’s true reason for coming to the police box is revealed.

When Natsume Atsuko, nicknamed Nuku Nuku, comes to live with Ryounosuke's family, he falls in love instantly. After all, to all appearances, she's a beautiful, normal - if slightly ditzy - teenage girl. In reality, however, she's an all-purpose cat-brained andorobot who's escaped from Mishima Heavy Industries' research laboratories. She's not supposed to use her special powers, but when more of Mishima's experiments run amuck and her friends are threatened, she'll do whatever she can to save them. It's never just another day at school when your classmate's an All Purpose Cultural Cat Girl!

Popo, and his family were harmoniously living with the insects in the forest until one day when his father left him and gave him a mysterious pendant with magical powers. Now, with mysterious events happened to his mother, he must travel with his newly found companions to the forest to solve the mysteries bound in the east.

As the group gets back from a long adventure Trapp's father also comes back from an excursion from Mt. Terrason with a precious white dragon jewel that looks identical to Shiro's jewel. Clay, Pastel, Rumy, and Shiro set out to find out if there is a link to the two jewels and whether Shiro might find his parents.

The year is 2242. Kanata wants to be a Drifter and meets Noir, who is a dud Magus with no memories. However, because Noir excels in battle against the Enders, Kanata partners with her and discovers exactly what it takes to be a Drifter.

Fubuki is a girl whose only goal in life is to be the best...at arcade games! She's not much good at sports, but when it comes to arcades, Fubuki's a whiz with special super-powers. When an evil organization steals her powers to gain world domination, Fubuki's dream of winning the World Championship is in danger! She and her friends must battle the wackiest bunch of video game villains ever in a quest to make playing games fun again.

Hiyori's grandmother died. To stop her crying all day and every day, Hiyori's father built a humanoid robot called Washimo, that looks like her granny, complete with dentures. It walks faster than a snail but slower than a rhinoceros beetle; in fact, however, it can outrun a bullet train.

A BL manga artist chasing fame reunites with his childhood crush, now a rising idol. Their worlds collide, rekindling feelings that never truly faded.

When college student Keiichi Morisato dials the wrong number while ordering for some food at his dormitory, he accidentally gets connected to the Goddess Hotline and a beautiful goddess named Belldandy appears out of a mirror in front of him. After getting kicked out of the dorm, Keiichi and Belldandy move to an old shrine and soon afterwards, Belldandy's sisters Urd and Skuld move in.

The Fountain of Life is the source of all life forces in the Bosco World. Princess Apricot, who is supposed to become Queen of Fountainland-the Guardian of the Fountain of Life-is kidnapped by villains who aim to rule the Bosco World. If Princess Apricot can't take the queen's throne by the next solar eclipse, the Fountain of Life will dry up. The animals living in the forest of Bosco, including Frog, Otter and Tortoise, decide to help Princess and take her to Fountainland in order to protect their peaceful life in the Bosco World. So begins the journey in a balloon full of dreams, hope, adventures, and love!

During the war-torn feudal wars of Japan, the Awa clan faced certain extinction from a rival clan backed by demonic forces. However, a careless promise by their lord leads to both salvation and disgrace when their family dog brings back the head of the enemy warlord and insists upon marrying the lord's daughter! Their unnatural union bears fruit, but when they are both killed, the eight unborn pups are reincarnated as the eight Dog Warriors - the Hakkenden. Slowly they find each other and come together as a group. These eight warriors, who represent the eight separate aspects of the Bushido, engage in bloody battles with demonic entitles and evil samurai in the final attempt to redeem their clan!

Supposedly Japan's greatest swindler, Makoto Edamura gets more than he bargained for when he tries to con Laurent Thierry, a real world-class crook.

Newcomer Rei Izumi is joining the narcotics investigation unit of the Ministry of Health, Labour and Welfare. As a scout for the newly created STAND, she’s going to recruit the most unique of agents, investigators, and informants to make up a specialized team to safeguard the country. And their first mission is to discover the hazardous drug destroying the lives of innocent Tokyo citizens.