

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.

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.

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.

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!

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.

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!

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.

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.

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.

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.

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.

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.

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?!

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?

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.

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

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.

For high school students like Shouichi Kamita, university entrance exams and the future are common concerns. It is also during this time in life that a mysterious emotion that vexes people of all ages may begin to weigh upon one's mind—love. At this point in his teenage years, Shouichi finds three girls he could see himself having a future with: the ever-cheerful Hikari Tsuneki, who teases Shouichi without mercy, but actually has a softer side; the competitive gamer, Tooru Miyamae, who has difficulty communicating with others; and Shouichi's childhood friend, Kyouko Touno, the sometimes immature shoujo manga enthusiast. Seiren follows Shouichi's relationships with these three girls across three separate arcs, as their feelings grow from mutual interest and blossom into something more beautiful.
Similar titles

When the Golden Race invited other races to join them in the stars, three sentient races answered their call. The Goldens called them the Bronze, Silver and Heroic Tribes. Just before the Gold Tribe left to travel to another Universe, a fourth race appeared, traveling to the stars on their own accomplishments. The Golds named the human race the Iron Tribe. During the passing of time, humanity suffers at the hands of the more dominant races and is now facing extinction. Following a prophecy left by the Gold Tribe, Princess Deianeira sets out to search for the powerful being who might be able to save humankind. She meets a wild haired boy on an abandoned planet—a fateful encounter that will not only change the fortunes of Humanity, but also the fate of the universe.


In 19th-century London, class lines are sharply drawn, and the social standing to which people are born dictates the path their lives will follow. Emma, an honest and hardworking young maid, never felt her place in life to be a burden. But then she met William, a member of the gentry and the eldest son of a wealthy family. His warm smile and earnest affection threaten to capture her heart... but can love truly conquer all?

In Eternal Nations, a fantasy strategy game where players manage an empire, Takuto Ira is a legendary player who sits atop the leaderboard. Takuto goes unconscious during a hospitalization and awakens on the continent of Idoragya, which looks just like the game. Takuto meets Sludge Atou, his favorite unit in the game, and decides to build Mynoghra, an evil empire.

An MMO gamer awakens as the Black-Winged Tyrant, Lufas Maphaahl, rising from her sealed fate—only to find this is very real. Her defeat 200 years ago unleashed monsters of death, and the legend is one of terror. Now, trapped in the body of history's most feared conqueror, he must survive a world that wants her dead…and uncover why he's here.

Ellen, an 8-year-old girl and half-spirit, once lived as a scientist in modern-day Japan. Now she's been reincarnated into a new family: Rovel, her father and the kingdom's legendary hero, and Origin, her mother and the queen of spirits. On top of that, Ellen herself has the power to manipulate chemical elements! But are Ellen's powers enough to protect their family's happiness?

Kenichi Yamada, a single, 35-year-old businessman, has spent the majority of his adult life playing every MMORPG to hit the market. Tired of the constant cycle of repetitive, newbie-centric gameplay, he is immediately drawn in by the promise of a new game that, on top of being never-ending, offers up a "Hell Mode"—a difficulty level that makes it nigh impossible to level up but also promises uncapped growth potential. Upon selecting the newly released Summoner class, Kenichi finds himself reborn as Allen, an infant in a serf family, with nothing but his wits and old memories to guide him.

Short anime based on the 4-koma series illustrating the daily lives of the Nijigasaki High School Idol Club’s members.

Rudd, an E-rank adventurer.His only skill, "Status Ailment Nullification," is a niche ability considered useful only for gathering medicinal herbs in miasma-choked dungeons. With virtually zero combat prowess, his fellow adventurers mock him with the nickname "Miasma Scavenger." In a desperate bid to change his life, Rudd ventures into a new dungeon—only to be betrayed by his party and left for dead. With his supplies gone and his life fading, he makes a forbidden choice: to consume the flesh of a monster. So begins the tale of Rudd’s "Monster Devouring" adventure, where he gains new skills by simply consuming his foes!

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.

Toshinta Tomoe decides to join the high school judo club to follow the footsteps of his mother, Teruko, a former judo champion.

Dating coach Bo-ra, whose relationship is failing, and prickly publisher Su-hyeok team up to save Bo-ra’s love life for the sake of her upcoming book about dating. The collaboration results in the mind game of romance.

The alien invader Goa plots to conquer planet Earth. He first warns the Murakami family (father Atsushi, mother Tomoko, and son Mamoru) of their invasion, and demonstrates his powers by transporting them to a prehistoric jungle and destroying a giant dinosaur before their very eyes. But they will not agree to surrender to Goa, so hope comes in the form of Magma, an armored, golden giant with long hair and antennae. He and his human-sized wife Mol — both created by the wizard Earth — are sent to defend our world against Goa. They befriend Atsushi and Mamoru, the latter has Magma emotionally touched since he wanted to have a child with Mol, so Earth creates a duplicate of Mamoru, named Gam Earth, and gives Mamoru a whistle, with which he can call Gam, Mol, and Magma in times of crisis. So when Goa unleashes his various daikaiju, chances are, Magma, Mol, and Gam will fly to the rescue.

They say whatever doesn’t kill you makes you stronger, but that’s not the case for the world’s weakest hunter Sung Jinwoo. After being brutally slaughtered by monsters in a high-ranking dungeon, Jinwoo came back with the System, a program only he could see, that’s leveling him up in every way. Now, he’s inspired to discover the secrets behind his powers and the dungeon that spawned them.

When bashful Miyano meets brash Sasaki, it feels like a teen romance manga come to life — but for these boys, real-world love is messier than fiction.

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!

Orphans raised by a martial arts master are plunged into a mystery involving demonic powers, drug cartels, ancient rituals and blood sacrifice.

In 2014, aliens revealed themselves to request trade with humanity. In exchange for limestone, they would provide a consciousness-controlled general-use robot known as an "Exoframe." Cheaper than an aircraft, tank, or firearm, and easy enough for anyone to operate, the "Exoframe" spreads change throughout the world in the blink of an eye...

Hajime Hinobori is a grade 7 student who loves Battle Spirits. His parents leave him to research Battlefield Systems for the International Battle Spirits Association. Hajime is left under the care of their dear friend Dr. Denjiro. Then, Hajime finds a completed a Battlefield System demo machine. He will now fight as a Test Battler and is incredibly excited by the Spirits materialized in the Battlefield!
