Kawaki (カワキ, Kawaki) is a child raised by Kara to be the future vessel for Isshiki Ōtsutsuki and the key to the fulfilment of their greatest wish. After being brought to Konohagakure by Team 7, he is taken in by Naruto Uzumaki who raises him as his own, during which he develops a brotherly bond with Boruto Uzumaki to solve the mystery of the Kāma.

In the anime, Kawaki chopped wood for a living in order to buy alcohol for his abusive drunken father, Kokatsu. One day, a goldfish merchant invited him to a goldfish show that he was holding the next day after Kawaki had shown interest in the goldfish. Later, his father noticed the invitation in his pocket and punished Kawaki for interacting with strangers by forbidding him dinner. The next day, Kawaki was beaten by two boys until the goldfish merchant saved him and offered him a job by helping him sell goldfish in other villages. Kawaki hurried home after noticing the crack in the glass of his father’s alcohol. Giving nothing but broken glass, Kawaki was locked in a room by Kokatsu.

Shortly after, Jigen arrived to propose buying him with a large sum of money. Not wanting to leave his home, Kawaki promised his father that he could do more work to earn money but was knocked unconscious when Kokatsu smashed an empty bottle on his head. Upon taking custody of the boy, Jigen told Kawaki that the suffering he endured was over and there was nothing to fear, as he was his new father. As Kawaki and Jigen took the only tunnel out of the village, the seemingly friendly merchant from before revealed himself as a child trafficker, hoping to take Kawaki for himself. After Kawaki had waited outside the tunnel for the two to settle who would take the boy, Jigen came out, claiming the man had “gladly withdrawn”.