Rain Swallow

Title Rondine di Pioggia
Designer Lorenzini
Attribute Rain
Animal Swallow
Users Yamamoto
Abilities Concentrated Downpour
Power C
Intelligence B
Speed A
Stamina A
Size 17cm
Personality Friendly
  • Charge
  • Rain Shield
  • Pecking
  • Waves
Manga Debut Chapter 140
Anime Debut Episode 75

Kojirou is a Rain Attribute Box Weapon that is clad in Rain Flames. The choice of a swallow for Yamamoto's Box Animal most likely draws from the fact that the kanji that represents the bird is part of his fighting style's name, the Shigure Soen Ryu.


Because the Tranquility effect of the Rain Flames weakens the opponent's Flames, it is effective in both offense and defense. As shown during the battle with Nosaru, its Flames are strong enough to actually extinguish enemy Flames and also have other uses such as providing camouflage. Furthermore, it can send rain by using the moisture in the atmosphere. It is capable of high-speed flight, and, because all its abilities but strength are high, it is a Box Weapon that conceals exceedingly advanced three-dimensional fighting abilities.


Box Weapons
Sky Box Weapons: NatsuNatsu (Version X)Bester (Sky Lion Mode)Bester (Sky/Storm Liger Mode)Bester (Platinum Armor Sky/Storm Liger Mode)ScuderiaScuderia (Sky Pegasus Mode)White DragonBlack DragonsSky Turtle
Storm Box Weapons: UriUri (Leopard Mode)Uri (Version Vongola Box)Uri (Version X)MinkStorm Box of CarnageStorm ScorpionsStorm MoleStorm SerpentStorm Stag BeetleStorm BatsStorm HyenaSistema C.A.I.Flame ArrowDark ScytheSpikesDark SlicerFlying CarpetThrone
Rain Box Weapons: JirouKojirouKojirou (Version Vongola Box)Jirou (Version X)Kojirou (Version X)AloAlfinRain Box of CarnageRain OwlRain Giant SquidRain PelicanHeavy Rain ElephantVampire BatRiding CropWater
Sun Box Weapons: KangaryuuKangaryuu (Version Vongola Box)Kangaryuu (Version X)Sun RhinoSun Box of CarnageKuuSun SpidersSereno GlovesSun TrowelMelone Base‎‎RopeOctopus Head
Lightning Box Weapons: GyuudonGyuudon (Version X)Colulu & WidgetColulu & Widget (Black Foxes Form)LivyaElectric Wild BoarElectric HornetElectric FireflyElectro MantisLightning BirdElettro BilliardTurbine Shoulder ArmorElectro LanceLightning SquidLightning Starfish
Mist Box Weapons: Mukuro (Mist Owl)Mukuro (Vongola Mist Owl)Mukuro (Version X)Spectral Sea SlugsFlan's Box WeaponMist Box of CarnageMist Sea SnakesMist StarfishNuvola GauntletIllusion SwordSuit of ArmorParachute & Balloon
Cloud Box Weapons: RollRoll (Version Vongola Box)Roll (Version X)ZamzaCloud Box of CarnageNuvola VelociraptorDemon BearCloud MothBellflowersCloud TonfaCloud WhipViolet Tornado

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