Aisa

Aisa (アイサ) is a small girl and, since she was born, she could sense via "mantra" whenever anyone dies or is severely wounded. Because of this, she hates it when people die and will try anything to stop it, even rushing into danger without any plans on what to do.

Aisa is good friends with Laki and tends to bring her gifts like bags of dirt, which are considered holy and are called Vearth in the sky. Aisa wants to be a strong fighter like everyone else but is afraid of Wiper, though she warms up to him eventually.

She is the one who reveals the defeat of both Satori and Gan Fall to the rest of the tribe, and later tries to stop all of the killing by going to Upper Yard, where she meets the Straw Hat Pirates. Though she is initially afraid of them, she soon warms up to the pirates, especially Luffy and Nami. Aisa helps Luffy locate Eneru and after the war ends, Aisa no longer has to be a warrior. Though she carries a Burn Blade, she is never shown using it.

Aisa (秋沙) means "merganser" (a type of seaduck), continuing the trend of female characters sharing names with birds.