Alluka

Alluka is a character from the manga and anime series Hunter x Hunter, created by Yoshihiro Togashi. She is primarily known as the younger sibling of Killua Zoldyck, one of the main protagonists. Alluka is a mysterious and powerful individual, possessing abilities that are central to the Zoldyck family's complex dynamics and Killua's personal journey.

The true nature of Alluka's powers is not fully explained, but it is understood that she is a conduit for a powerful entity known as Nanika. This entity grants wishes, but its demands are often strange and increasingly difficult to fulfill. The more wishes Nanika grants, the greater the subsequent requests become, leading to dangerous consequences if not handled carefully. Alluka herself appears to have a childlike innocence and a close bond with Killua, who is the only one of her family capable of communicating with her effectively and safely.

Alluka's existence is a closely guarded secret by the Zoldyck family, a notorious clan of assassins. They fear Nanika's power and the potential for it to be misused. Killua, however, sees Alluka not as a weapon but as a beloved sibling and is determined to protect her and free her from the Zoldyck family's control. Alluka's storyline often serves to highlight Killua's protective nature and his struggle against his family's oppressive traditions. Her abilities and the implications of her relationship with Nanika make her a significant element in the overarching narrative of Hunter x Hunter.