A Man's Box Weapon is the 108th episode of the Katekyo Hitman Reborn! anime.
Tsuna's family become worried at the amount of time Tsuna has been gone while they continue searching the base. While crawling through an air duct, they run into Baishana and Nigella fighting. Nigella is then beaten by Baishana's Box Weapon, a snake covered in storm flames. Ryohei decides to fight in place of Yamamoto and Gokudera and summons his Box Weapon Kangaryuu, a Kangaroo. Back at the scene of Tsuna's battle, Tsuna and Spanner are nowhere to be found.