OniAi
お兄ちゃんだけど愛さえあれば関係ないよねっ
Adorable young Akiko is thrilled to be reuniting with Akito, the handsome older brother she hasn’t seen in years! In fact, she might be a little too excited about living under the same roof with her precious big bro. This pint-sized cutie has a serious brother complex, and she’s definitely not interested in sharing his attention. Unfortunately for little sister, she and Akito won’t be living alone: three gorgeous girls from the student council will be along for the ride! So much for the peaceful existence Akito was craving. Big Brother the dreamy will have to stay on his toes to avoid the advances of Sis and her ravishing rivals!
Where to stream OniAi
Streaming now in the United States on Crunchyroll.
Trailers and promos
BD/DVD Combo Trailer
"Girlfriend"
"Tsundere"
"Guhehehe"
"BroCon"
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Frequently asked questions about OniAi
Where can I watch OniAi in the United States?
OniAi is available to stream on Crunchyroll in the United States. Streaming availability is provided by JustWatch and can change over time.
Can I watch OniAi for free?
Not free in the United States right now. OniAi needs a subscription to Crunchyroll.
What are the ratings for OniAi?
OniAi scores 6.5 on The Movie Database.
Who stars in OniAi?
OniAi stars Ryota Osaka, Ibuki Kido, Minori Chihara, Asami Shimoda, and Eri Kitamura. Daisuke Suzuki is the creator.
How many seasons of OniAi are there?
OniAi has 1 season and 12 episodes, and is ended.
How long does it take to watch all of OniAi?
All 12 episodes of OniAi add up to about 5 hours at roughly 25 minutes each. At two hours a night that is about 3 evenings; at four hours a day it takes about 1 days.
What network is OniAi on?
OniAi airs on AT-X, and is produced by SILVER LINK., Media Factory, and Lantis.
What language is OniAi in?
OniAi is in Japanese, and its original title is お兄ちゃんだけど愛さえあれば関係ないよねっ.
Ratings and metadata from The Movie Database (TMDB), streaming data from JustWatch. This product uses the TMDB API but is not endorsed or certified by TMDB. Streaming availability checked October 2026.