Synopsis

Reborn informs Tsuna and his companions that their training for opening their Vongola Boxes will commence the following day. That evening, Tsuna’s box weapon violently agitated, prompting him to open it and release the weapon within. The weapon then attacked Tsuna, but with assistance from Yamamoto and Basil, they managed to reseal it within its container. Dino arrives and explains that the attack stemmed from improper opening, cautioning Tsuna that Sky Box Weapons require delicate handling.