Drawing its name from kiro, the shortened Japanese form of kilogram, this Paramecia power grants Mikita total say over how much she weighs. She can sink to a mere kilogram, buoyant enough to sail on a breeze under a parasol, or climb to ten thousand kilograms and crash down hard enough to fracture the ground and mash anything beneath her. At maximum heft she can badly hurt beasts as huge as dinosaurs. What never shifts through any of this is how big she looks.
Even as her mass leaps around, she carries on moving as though untouched, and her landings scarcely mark her, inflicting only minor harm on each descent. Turned featherlight, she escapes an incoming strike merely by floating out of range. The snag is that the fruit governs weight and weight alone, leaving her density and toughness unchanged, so a foe can still bat her aside in mid-drop, which is how Nami and Vivi flung her away at full tonnage before she could crush Usopp. A quick enough enemy can likewise dodge a plunge from on high and let her thud into the earth. Oda placed the fruit beneath the Ton Ton no Mi, which climbs to far heavier figures, and the usual Devil Fruit weaknesses are in play.

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A Baroque Works agent going by Miss Valentine, Mikita fights by turning light to spring high on her umbrella, then swelling her mass to dive-bomb her marks. Her partner Gem, whose blasts create explosions, often flings her upward to set up these smashing drops, though the ploy is hampered because she cannot bend a fall's course. She also tortures pinned enemies, settling on top of them and piling on weight little by little. Her named moves include the 10,000 Kilo Press, the head-aimed 10,000 Kilo Guillotine, and the gradually crushing Crescendo Stone.
The Kiro Kiro no Mi is a Paramecia-type Devil Fruit that lets its eater set their body weight anywhere from one to ten thousand kilograms while their size stays the same.
Mikita, known as Miss Valentine of Baroque Works, is the only known eater of the Kiro Kiro no Mi.
Miss Valentine turns light with the Kiro Kiro no Mi to float and spring high on her umbrella, then increases her mass to crash down on opponents as a crushing weight, a tactic her partner Gem assists by launching her upward.
The Kiro Kiro no Mi only changes weight, not density or toughness, so a foe can still knock Miss Valentine aside mid-drop or dodge her fall entirely, as Nami and Vivi did by flinging her away before she could crush Usopp.
The Kiro Kiro no Mi caps out at ten thousand kilograms, while the Ton Ton no Mi, a similar weight-changing power, climbs to far heavier figures.
Looking for more on Kiro Kiro no Mi? The One Piece Wiki on Fandom has a dedicated page with community notes.
View on FandomThis content is original writing by Daddy Jim Headquarters based on the One Piece anime series, manga, and official materials. Episode and chapter references are cited where applicable.
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