We follow Mahiro Oyama, an unemployed good-for-nothing shut-in, who not only hasn't left the house in two years, but is also exceedingly addicted to gross video games. One afternoon, he wakes up and notices that his body feels a little off. Finding that strange, he goes to reach for his tablet, but what does he see in his reflection, but an adorable young lady. I wonder what lies in store for the "former" big brother, Mahiro as he's thrust headfirst into his new life as a girl.

Mahiro's Confusing New Body

ONIMAI: I'm Now Your Sister!

As Mahiro stumbles through his new life as a girl, he finds himself gradually beginning to get into the swing of things. Realizing this, however, prompts him to try and reclaim some of his masculinity. He tries, in futility, to engage his core and do a sit-up, but ends up with a stomachache instead. Seeing his condition worsen rapidly before her eyes, Mihari has an epiphany. She realizes that his pain may actually have something to do with fact that almost a month has passed since Mahiro turned into a girl...

Mahiro's Time of the Month

Mahiro makes a mad dash for the bathroom, but when he opens the door, he finds the facilities are already occupied by a high school girl he's never met. This bold fashionista turns out to be Kaede, Mihari's old classmate from middle school. Mahiro is initially a little nervous around her, but as he gets to know her, he learns how much of a nice person she is and becomes quite attached to her. Then, out of nowhere, Kaede asks "You've never done it before, have you?" and begins to scooch closer to a puzzled Mahiro. I wonder what she's about to do next...

Mahiro's Close Encounter

Mahiro loses to Mihari in a video game, so he has to do the grocery shopping this week as punishment. As an unemployed, good-for-nothing shut-in, the task at hand is daunting, but he plucks up the courage and makes his way towards the supermarket. The size of the crowd, however, makes his resolve waver and Mahiro finds himself cowering outside the store entrance. It is then that a young boy (?) around his age, wearing a baseball cap, comes to the rescue and offers him a helping hand. Thanks to the boy's (?) help, Mahiro is able to buy the groceries he needs and is just about to head home, when Kaede suddenly shows up. Seemingly, out of nowhere.

Mahiro's New Friend

In a rare turn of events, Mihari wakes up one morning to find Mahiro has gotten up before her. Since the corner store was going to start selling clear files from his favorite anime that day, he had woken up early to go pick them up before they sold out. Mihari is overwhelmed with joy to see Mahiro going outside of his own accord. On his way back from buying the clear files, Mahiro stops by an arcade for the first time since middle school. He's enjoying a rhythm game when suddenly he senses a man standing watching him from behind. A few minutes go by when he feels a tap on the shoulder...

Mahiro Discovers Adventure and Social Gatherings

Momiji shows up at Mahiro's house with her two classmates, Asahi Ohka and Miyo Murosaki, to invite him out for parfaits.

Mahiro Goes Back to Middle School

Just when Mahiro is beginning to get used to middle school life again, finals are upon them. Despite his initial blasé attitude, Mahiro finds himself reluctantly handing in a 80% blank answer sheet after having slept through the entire first exam.

Mahiro's Role-Playing Game

It's finally winter break and Mahiro is excited to get into his Winter Vacation Mode. Unbeknownst to him, however, Mihari invites Momiji and the others over for a sleepover. She hopes this will prevent a potential relapse into his old, shut-in ways.

Mahiro's First Girls Sleepover

It's Christmas and Mahiro is shocked to hear his own little sister has a date. Unable to shake his unease, he follows her through the festive hustle and bustle in secret, with Momiji as his escort in tow. Who could Mihari possibly be meeting with?

Mahiro Rings in the New Year

It's the start of the third semester and winter uniforms are now in effect. For Mahiro and the girls at school, this means braving the cold winter air in mandatory skirts. Who knows how Miyo will react when he and Momiji show up in matching scarves, too.

Mahiro Ponders Boobs and Identity

Horoscopes are all the rage at school right now, and Mahiro is curious to see what all the fuss about. According to his forecast, an important occasion is on the horizon and he may be in for a surprise or two. But what occasion could it be alluding to?

Mahiro Pretties Up

Mahiro and the girls take a trip to a Japanese inn over spring break. First they hit the town in their yukata, before heading to the open-air bath to detox. However, things go south when Mahiro begins to feel a familar tingling sensation between his legs.

Mahiro's Future as a Sister

高野麻里佳

石原夏織

金元寿子

津田美波

優木かな

日岡なつみ

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.

Japan

AT-X

https://peakfilm.net/images/t/original/xpwVTvVTiSZgcYnBGMwzWUn6P7X.png/onimai-im-now-your-sister-logo.png

Asahi Kashiwagi lives the typical life of an average high school student — until the day a TV fortune teller’s predictions come true one after another, culminating in a series of risqué encounters! Destiny seemingly draws five beautiful girls into Asahi’s path, and soon he finds himself fielding not one, not two, but five love confessions. Asahi will need to follow his heart to find the perfect love for him, or else his love fortunes may end in one epic flail and flop.

Love Flops

https://peakfilm.net/images/t/original/q5F4t7pQ8NRdTm9shg1XMO1uABV.png/love-flops-logo.png

From sunup to sundown, Fushihara-san works ’round the clock. She spends so much time there that even the ghosts worry about her well-being! One night, Fushihara-san was working late as usual when a little ghost girl whispered to her, “Leave now”—an encounter that would change her life forever. Be healed by the heartwarming daily life of the cute little ghost and Fushihara-san!

Miss Shachiku and the Little Baby Ghost

https://peakfilm.net/images/t/original/ruLcLMUUoYaluV1xXZDPNfkuQuT.png/miss-shachiku-and-the-little-baby-ghost-logo.png

Lloyd is a novice adventurer whose dream is to discover “true strength” in the capital he’s always admired, despite growing up with neighbors who always considered him weak. The story starts with him departing from his hometown, which just so happens to be located right next to…one of the most dangerous dungeons in the world?!

Suppose a Kid from the Last Dungeon Boonies Moved to a Starter Town?

https://peakfilm.net/images/t/original/y1ascZBpwGjsdtZGgt12l7Ddfvb.png/suppose-a-kid-from-the-last-dungeon-boonies-moved-to-a-starter-town-logo.png

On his way home from drinking his sorrows away after being rejected by his crush, 26 year old salaryman Yoshida finds a high school girl named Sayu sitting on the side of the road and ends up letting her stay at his place overnight. Not having the heart to put the runaway out on the streets, Yoshida allows her to stay at his place... And so began the awkward, irritable, and slightly heartwarming relationship between a runaway high school girl and a salaryman living together.

Higehiro: After Being Rejected, I Shaved and Took in a High School Runaway

https://peakfilm.net/images/t/original/wZGnlg9Dqa04qRd2HzxTCxIPwmO.png/higehiro-after-being-rejected-i-shaved-and-took-in-a-high-school-runaway-logo.png

In Shin-Yokohama, humans engage in a long, drawn out battle against vampires. Amongst them, the last "true vampire" stands...

Will he be a bringer of peace, or destruction?

The Vampire Dies in No Time

https://peakfilm.net/images/t/original/oTdpYsKDlcCo4OgFGQaOMBWJLw4.png/the-vampire-dies-in-no-time-logo.png

Five members of the school culture club—Taichi Yaegashi, Iori Nagase, Himeko Inaba, Yui Kiriyama, and Yoshifumi Aoki—encounter a bizarre phenomenon one day when Aoki and Yui switch personalities without warning. The same begins to happen to the other club members, throwing their daily lives into chaos. At first the five students find some amusement among the confusion, but this connection also exposes the painful scars hidden within their hearts... When their calm lives are shattered, the relationships between the five students also begin to change!

Kokoro Connect

https://peakfilm.net/images/t/original/7siv7zoEu6Yc1z38TDkq3PVv94V.png/kokoro-connect-logo.png

Shadowbrokers are those who go unnoticed, posing as unremarkable people, when in truth, they control everything from behind the scenes. Sid wants to be someone just like that more than anything, and something as insignificant as boring reality isn’t going to get in his way! He trains in secret every single night, preparing for his eventual rise to power—only to be denied his destiny by a run-of-the-mill (yet deadly) traffic accident. But when he wakes up in a another world and suddenly finds himself at the head of an actual secret organization doing battle with evil in the shadows, he’ll finally get a chance to act out all of his delusional fantasies!

The Eminence in Shadow

https://peakfilm.net/images/t/original/irEpJwhpMNZOLfTwIvihGnI4YQf.png/the-eminence-in-shadow-logo.png

It’s love at first sight for Fudo and Desumi, except it was during a battle of life and death. Fudo, leader of the hero squad Gelato 5, and Desumi, the Death Queen of the evil society Gekko, have found themselves caught in a forbidden love—and it’s their first relationship! Moving in secrecy, they live holding hands with one weapon in the other, finding out what’s truly fair in love and war.

Love After World Domination

https://peakfilm.net/images/t/original/sBdb77KDBuzSmkjz9nppzLIn52j.png/love-after-world-domination-logo.png

Rather than take a more sensible approach to salvaging his grades in time for graduation, Alto summons a bit of otherworldly help. Only after does he learn he’s bound the legendary she-devil Vermeil into service as his familiar!

Vermeil in Gold

https://peakfilm.net/images/t/original/z0AzxdNUJJ8gM6gqeEFVCBuBmOo.png/vermeil-in-gold-logo.png

Jun Shirosaki’s love life takes a wild turn when he finds himself caught between the Jinguji twins—his childhood friends who are as different as night and day. Rumi, the older sister, pairs a boyish charm with a maiden’s heart, while Naori combines girlish looks with her deep love for otaku culture. As feelings grow and confusion mounts, Jun must navigate this unexpected love triangle next door.

Love Is Indivisible by Twins

https://peakfilm.net/images/t/original/iXuiVb1VHRAo3jyqD3QNsvlHOPw.png/love-is-indivisible-by-twins-logo.png

Turns out, evil takes initiative! With world domination close at hand, the Kisaragi Corporation turns its sights on interstellar conquest, and who better to take over a magical world than two randomly assigned minions—Combatant Agent Six and his android partner Alice? But Six’s path up the evil corporate ladder won’t be easy—a Demon Lord’s army is hatching its own nefarious plan!

Combatants Will Be Dispatched!

https://peakfilm.net/images/t/original/wCaSsOIdU8VBET3VUwxLkX9S8lm.png/combatants-will-be-dispatched-logo.png

The Shiunji family with their seven children reside in a mansion within Tokyo’s Setagaya ward. The eldest son, Arata, is tired of being pushed around by his five sisters and daydreams of a life without them. That is, until Arata’s father reveals a shocking truth—Arata isn’t biologically related to his sisters! The siblings’ relationships will be tested as they navigate life in this new light.