Top 5 Anime Like OniAi (Oniichan dakedo Ai sae Areba Kankeinai yo ne!) [2026 List]

Oniichan dakedo Ai sae Areba Kankeinai yo ne!

After six years of living separately, brother and sister Akiko and Akito Himenokouji are finally reunited. The two used to be quite close, until their parents died and they were sent to live with separate foster families. Now the two can live together and go to the same school as brother and extremely loving sister!
It doesn’t take long before it becomes abundantly clear that Akiko has a huge brother complex. Unfortunately for Akiko, her brother only sees her as a little sister he must protect. But that won’t stop her from trying to win her brother’s affections!
Things are only complicated when more girls move in with the siblings, making Akiko even more determined than ever to keep her brother’s eyes only on her. That’s tough to do with other girls flaunting their swimsuit-clad bodies at Akito, fighting over who gets to take care of him, and otherwise meddling in Akiko's plans for her brother. This is going to be one fun household…!

OniAi has finished airing and it has 12 Episodes. It is also Known as: お兄ちゃんだけど愛さえあれば関係ないよねっ, As Long as There's Love, It Doesn't Matter If He Is My Brother, Right?

Genres: Ecchi , Romance , Japan , Slice of Life , Comedy , Present , Harem , School Life

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5. Hotarubi no Mori e

Hotarubi no Mori e

Intrigued by the tale of a mountain god, six-year-old Hotaru Takegawa loses her way in the ancient forest while visiting her uncle. Exhausted and desperate for help, Hotaru is thrilled to find a masked forest spirit named Gin. She learns the hard way that she should not touch the boy, or he would disappear. In spite of this, Gin leads Hotaru out of the forest and warns her never to return when she promises to come again with a gift.
Paying no heed to his cautionary words, and despite being separated by both distance and planes of existence, Hotaru and Gin become close friends as she visits him every summer. However, their relationship and resolve are put to the test, when romantic feelings conflict with the one and only rule.
Based on Yuki Midorikawa's manga of the same name, Hotarubi no Mori e is a tale of friendship and compromise of two people who should never have crossed paths, as their lives become hopelessly intertwined.

To the Forest of the Firefly Lights has finished airing and it has 1 Episodes. It is also Known as: 蛍火の杜へ, Into the Forest of Fireflies' Light, The Light of a Firefly Forest

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4. Seishun Buta Yarou wa Bunny Girl Senpai no Yume wo Minai

Seishun Buta Yarou wa Bunny Girl Senpai no Yume wo Minai

"Puberty syndrome – Abnormal experiences rumored on the internet to be caused by sensitivity and instability during adolescence. This year, Sakuta Azusagawa, a second-year student at a high school near Enoshima, meets several girls that are experiencing this “puberty syndrome.” For instance, he meets a wild bunny girl in the library. She turns out to be an actress on hiatus, Mai Sakurajima, who is also his senior at the school. For some reason, no one else can see this enchanting girl. How did she become invisible…?

Rascal Does Not Dream of Bunny Girl Senpai has finished airing and it has 13 Episodes. It is also Known as: 青春ブタ野郎はバニーガール先輩の夢を見ない, Seishun Buta Yarou wa Bunny Girl Senpai no Yume wo Minai

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3. Clannad: After Story

Clannad: After Story

Clannad: After Story, the sequel to the critically acclaimed slice-of-life series Clannad, begins after Tomoya Okazaki and Nagisa Furukawa graduate from high school. Together, they experience the emotional rollercoaster of growing up. Unable to decide on a course for his future, Tomoya learns the value of a strong work ethic and discovers the strength of Nagisa's support. Through the couple's dedication and unity of purpose, they push forward to confront their personal problems, deepen their old relationships, and create new bonds.
Time also moves on in the Illusionary World. As the plains grow cold with the approach of winter, the Illusionary Girl and the Garbage Doll are presented with a difficult situation that reveals the World's true purpose.
Based on the visual novel by Key and produced by Kyoto Animation, Clannad: After Story is an impactful drama highlighting the importance of family and the struggles of adulthood.

Clannad ~After Story~ has finished airing and it has 24 Episodes. It is also Known as: CLANNAD〜AFTER STORY〜 クラナド アフターストーリー, Clannad: After Story

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2. Ano Hi Mita Hana no Namae wo Bokutachi wa Mada Shiranai.

Ano Hi Mita Hana no Namae wo Bokutachi wa Mada Shiranai.

Jinta Yadomi is peacefully living as a recluse, spending his days away from school and playing video games at home instead. One hot summer day, his childhood friend, Meiko "Menma" Honma, appears and pesters him to grant a forgotten wish. He pays her no mind, which annoys her, but he doesn't really care. After all, Menma already died years ago.
At first, Jinta thinks that he is merely hallucinating due to the summer heat, but he is later on convinced that what he sees truly is the ghost of Menma. Jinta and his group of childhood friends grew apart after her untimely death, but they are drawn together once more as they try to lay Menma's spirit to rest. Re-living their pain and guilt, will they be able to find the strength to help not only Menma move on—but themselves as well?

anohana: The Flower We Saw That Day has finished airing and it has 11 Episodes. It is also Known as: あの日見た花の名前を僕達はまだ知らない。, AnoHana, We Still Don't Know the Name of the Flower We Saw That Day.

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1. Toradora!

Toradora!

Ryuuji Takasu is a gentle high school student with a love for housework; but in contrast to his kind nature, he has an intimidating face that often gets him labeled as a delinquent. On the other hand is Taiga Aisaka, a small, doll-like student, who is anything but a cute and fragile girl. Equipped with a wooden katana and feisty personality, Taiga is known throughout the school as the "Palmtop Tiger."
One day, an embarrassing mistake causes the two students to cross paths. Ryuuji discovers that Taiga actually has a sweet side: she has a crush on the popular vice president, Yuusaku Kitamura, who happens to be his best friend. But things only get crazier when Ryuuji reveals that he has a crush on Minori Kushieda—Taiga's best friend!Toradora! is a romantic comedy that follows this odd duo as they embark on a quest to help each other with their respective crushes, forming an unlikely alliance in the process.

Toradora! has finished airing and it has 25 Episodes. It is also Known as: とらドラ!, Tiger X Dragon

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