How to Say “Brother” in Japanese Anime

お兄ちゃん
onii-chananime, affectionate
Anime uses different words for older and younger brothers. An older brother is お兄ちゃん (onii-chan) or 兄さん (nii-san). A younger brother is 弟 (otōto). It is also called 兄 (ani).
Meaning: male sibling (phrase)

Ways to say it

“brother” in Japanese
Japanese Romanization Note
お兄ちゃん onii-chan anime, affectionate
兄 ani older brother, own
弟 otōto younger brother, own

When a character calls to an older brother, お兄ちゃん (onii-chan) is common. When talking about their own older brother to others, they say 兄 (ani). An older brother usually calls the younger one by name.

How does it change in a sentence?

Japanese has no single everyday word for "brother". The word depends on age, so you must pick older or younger.

Did you know?

  • Characters often call a younger brother by name, so 弟 (otōto) appears mostly when a character talks about him.

Examples in context

  • 兄は強いです。
    Ani wa tsuyoi desu.
    My older brother is strong.
  • 弟を守る。
    Otōto o mamoru.
    I will protect my younger brother.

Example conversation

In an anime scene, Ren returns home to his younger brother Sora.

  1. Sora

    お兄ちゃん、おかえり。
    Onii-chan, okaeri.
    Welcome home, big brother.
  2. Ren

    ただいま、ソラ。
    Tadaima, Sora.
    I am home, Sora.
  3. Sora

    今日は何してた?
    Kyō wa nani shiteta?
    What did you do today?
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Lesley Amanda
Lesley AmandaHelp make this guide better. Spot a mistake, know another way to say it, or have an example from real life? Share it below.
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