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  1. Warring Tides by

    Fandoms: Haikyuu!!, Avatar: The Last Airbender (Cartoon 2005)  

    09 Aug 2026

    Tags
    Summary

    What if Haikyuu met Avatar the Last Airbender?

    In the Northern Water Kingdom, the four royal brothers, Koushi, Tooru, Keiji, and Tobio, stand as an example of how not to raise your children--to despise and think of each other as rivals. When their father dies, and Tooru finds himself in a possible position to take power, he strikes.

    Now, Sugawara is thrown out of his own home, imprisoned, and in need of help. Thankfully, the Avatar and his friend are here to save him.

    Back in the Northern Kingdom, Keiji returns enraged at Koushi's imprisonment, and declares a civil war against his brother.

    Now, the lands are at war again. Which nations will take which side? What side will young Tobio take?
    When do arguments simply become war?

    Language:
    English
    Words:
    19,014
    Chapters:
    9/?
    Comments:
    9
    Kudos:
    21
    Bookmarks:
    4
    Hits:
    433