This hand is a prosthetic designed by Katasuke Tōno.[1]
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![Shinobi Ware Absorption](https://cdn.statically.io/img/static.wikia.nocookie.net/naruto/images/e/ee/Shinobi_Ware_Absorption.png/revision/latest/scale-to-width-down/180?cb=20210111023937)
Naruto using the prototype.
Katasuke designed a prosthetic with Momoshiki's ninjutsu absorption in mind. It can absorb ninjutsu like Momoshiki could, but development has yet to achieve releasing them back.[1] As it was specifically designed for Naruto, it only functions when powered by his chakra.[2]