What is onii-chan?

Onii-chan (お兄ちゃん) is a Japanese term of endearment meaning "older brother." It's a familiar and affectionate way for a younger sibling, typically a younger sister, to address or refer to their older brother. The term implies a close and loving relationship, often including a sense of reliance and admiration. It is more affectionate than the more formal "onii-san" (お兄さん).

Here's a breakdown of important aspects:

• Meaning: The core meaning is "older brother," but with added affection. See: https://www.wikiwhat.page/kavramlar/Older%20Brother
• Use: Generally used by younger sisters. Use by other relatives or friends may occur, but is less common.
• Affection: It conveys warmth and closeness, not just a familial connection. This affection level influences its use. See: https://www.wikiwhat.page/kavramlar/Affection
• Anime/Manga: The term is very prevalent in anime and manga, often used to establish character dynamics and relationships. Due to anime/manga influence it has even gained popularity in the western world.
• Variations: There are other variations, like "onii-sama" (お兄様), which is even more formal and respectful (often used in very formal or high-class settings or to create humorous situations). Also, there is "nii-chan", which is an even more childish and informal variant. See: https://www.wikiwhat.page/kavramlar/Japanese%20Honorifics

The context of its use is extremely important; using it inappropriately can be awkward or even offensive.