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|Box Weapon Prototype|
Bokkusu Heiki Purototaipu
|Air Date||August 15, 2009|
|Arc||Arcobaleno Trials Arc|
|Opening Song||Easy Go|
|Ending Song||Aoi Yume|
Guardian Showdown Cloud vs. Mist
Catch the Wind
Box Weapon Prototype (匣兵器プロトタイプ) is the 146th episode of the Katekyō Hitman Reborn! anime series.
SynopsisEditTsuna, Yamamoto, and Ryohei are called out to Namimori Middle School, where they encounter Mammon, who reveals he has Kyoko hostage. Mammon begins Tsuna's trial with a set of riddles which leads them to various locations. The final riddle leads them to Namimori Shrine, where he reveals he does not actually have Kyoko hostage. Mammon uses a box weapon and releases a starfish to battle the three, but is quickly defeated. Tsuna passes Mammon's trial of adaptability and receives the seal. Reborn asks Mammon about his Box Weapons; the latter replies that the boxes have been showing up in the mafia and that the Lightning Arcobaleno Verde has asked him to test them out.
|Arc Episode Guide|
|Arcobaleno Trials Arc Episodes|
|Reunion • The Strongest Seven • Trial 1 • The Arcobaleno Seals • Guardian Showdown Cloud vs. Mist • Box Weapon Prototype • Catch the Wind • Two Successors to the Sky • Reborn's Trial • Closed Path • Once the Rainbow is Complete • The Boss' Resolution • The Final Seal|
|Daily Life Arc • Kokuyo Arc • Varia Arc • Future Arc • Arcobaleno Trials Arc (Filler) • Choice Arc • Inheritance Succession Arc (Filler) • Future Final Battle Arc • Inheritance Ceremony Arc • The Curse of the Rainbow Arc|