Tsundere Koi Three and a Half Years Old

Is the Ao family going to collapse? Daddy is dying? That's because the koi is missing. Do eldest brother and third brother hate me? It makes you smell really good in minutes. Best friends, best friends, and sworn enemies? That's because they still don't understand the horror of koi. I, Ao Yutong, have a father's love, an aunt's love, and a dear second brother.