Yumizu Kaneamari appears as a recurring human character in the 2020 sequel series, depicted as a young boy with brown hair. His primary role involves interactions with the genies and the central protagonist, Kantarō Yodayama.

Yumizu owns a spoiled and disobedient pet bulldog named Burgon, whose behavioral issues stem directly from Yumizu's inability to properly train or discipline him. Seeking help for Burgon, Yumizu locates dog trainer Inugami Milano and shows a smartphone video of Milano to the genie Akubi. This action sparks Akubi's interest, leading her to transform Kantarō into a dog to communicate with Burgon.

During the subsequent training session, Burgon panics and endangers himself near a cliff edge. Kantarō, in dog form, intervenes to calm Burgon, resulting in both falling during the cliff's collapse. They are rescued by a magic carpet. Yumizu's ownership of Burgon and his actions directly instigate these specific plot developments involving the genies and Kantarō.