User blog comment:Neko Neko no Mi Model: Russian Blue/The potential merits of a Time-Time fruit, particularly one held by an Admiral/@comment-122.55.30.25-20180528000914

the possibility exist, remember the noro noro no mi, wherein the user can alter the time itself to progress slower though only at a fixed set of ten seconds for its effectivity. Also, the unnamed fruit of Jewelry Boney, wherein she can progress or regress the age of both herself and her enemies, in her case she can manipulate the time of that person. Another is the Hobby Hobby no mi, wherein the user stops getting older, though it is not stated if it's only her body or if she is not really getting old. It seems that certain fruits goes beyond the imagination of people, thus, a fruit that can alter time may exist.