Miss Valentine’s parasol-float descents in Ch. 110 implicitly pre-loaded the Kilo-Kilo no Mi (1-kg lightness mode without on-page name).
Ch. 112 p.9 names the fruit on-page for the first time: “Feel the power from my Kilo-Kilo Fruit!!! I only weigh one kilogram— light enough to land in a cloud of dust!” (VIZ footnote: just over 2 lb).
Ch. 112 p.11 canonizes the full 1-to-10,000-kg variable-weight mechanic and debuts the 10,000 Kilo-Press attack-name.
Forward-pattern: The kilo- prefix is the first instance of the Baroque-Works measurement-themed Devil-Fruit naming convention that subsequently produces Doru Doru (wax-doll, Mr. 3), Supa Supa (slice-slice, Mr. 1), Mane Mane (mimic-mimic, Mr. 2), Suna Suna (sand-sand, Crocodile). The sub-pattern’s load-bearing function: BW Officer-Agent Devil-Fruits are named for measurement-units or material-substances, signaling the organization’s engineer/measurer aesthetic in contrast to the World Government’s animal-aesthetic (Zoan).