![](https://image.tmdb.org/t/p/original/umatSHXu0JBYDSTxkH1MQK6MlrY.jpg)
![](https://image.tmdb.org/t/p/w342/6x7mx9f3ufHCC3pNgMoMnzVo3jw.jpg)
Box Weapon Prototype
Tsuna, 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 did not have Kyoko hostage. Mammon uses a box weapon and releases a starfish to battle the three and is quickly defeated. Tsuna passes Mammon's trial of adaptability and receives the seal. Reborn asks Mammon about his box weapons and the latter replies that the boxes have been showing up in the mafia and he was asked to test them out by the Arcobaleno Verde.
Writing:
Stars:
- Akira Amano
- Nobuaki Kishima
- Hideki Mitsui
Stars:
![](https://image.tmdb.org/t/p/w300/75XDTJj3SHBxNCZDTfqpvNpo609.jpg)
![](https://image.tmdb.org/t/p/w300/krgyWJ7Ck93Qos2a7yom444H7E1.jpg)
![](https://image.tmdb.org/t/p/w300/3wztM15Bq7TX3Kc8IzApqsOQQjK.jpg)
![](https://image.tmdb.org/t/p/w300/fBtoNKFXPYOrg8yno7YBDn6FiL9.jpg)
Other episodes for this season
![Operation Start](https://image.tmdb.org/t/p/w300/l3ZxIsMnuKLm8PVCPs3oJc4hb9m.jpg)
![The First Obstacle](https://image.tmdb.org/t/p/w300/5JUkL3cnEhWNAJ3Qe5rBtdwNBzo.jpg)
![The Troublesome Magician](https://image.tmdb.org/t/p/w300/9RkK4wgJatXdLiTZGeSbz6EbX0H.jpg)
![Episode 4](https://image.tmdb.org/t/p/w300/btSkIq2JBWVczK6zB1TBPifFlY2.jpg)
![Episode 5](https://image.tmdb.org/t/p/w300/umatSHXu0JBYDSTxkH1MQK6MlrY.jpg)
![Episode 6](https://image.tmdb.org/t/p/w300/s2W1I9qLUSp8wqqcdfMYY3o1J61.jpg)
![Episode 7](https://image.tmdb.org/t/p/w300/cqx2shUgF3Z4QxYa6rXJkDhmzNp.jpg)
![Episode 8](https://image.tmdb.org/t/p/w300/yaLBrqIeeW8BG3XhkB8UpDUXnqG.jpg)
![Episode 9](https://image.tmdb.org/t/p/w300/wpKfFIiTG4W7cftsCHCjEIm5fnl.jpg)
![Episode 10](https://image.tmdb.org/t/p/w300/yE4oqfTjinYRsbY0zlCzbpAwFEA.jpg)
![Episode 11](https://image.tmdb.org/t/p/w300/nkk04hJR8tPdi297U0FYAc4cBmz.jpg)
![Episode 12](https://image.tmdb.org/t/p/w300/hL1nqp6T3ghEQ5q1tqBIwLjPHic.jpg)
![Episode 13](https://image.tmdb.org/t/p/w300/chtNyFpQzKWNJ4Z5Gso7k6z1KVu.jpg)
![The Strongest Seven](https://image.tmdb.org/t/p/w300/l3ZxIsMnuKLm8PVCPs3oJc4hb9m.jpg)
![Trial #1](https://image.tmdb.org/t/p/w300/5JUkL3cnEhWNAJ3Qe5rBtdwNBzo.jpg)
![The Arcobaleno Seals](https://image.tmdb.org/t/p/w300/9RkK4wgJatXdLiTZGeSbz6EbX0H.jpg)
![Guardian Showdown! Cloud and Mist](https://image.tmdb.org/t/p/w300/btSkIq2JBWVczK6zB1TBPifFlY2.jpg)
![Box Weapon Prototype](https://image.tmdb.org/t/p/w300/umatSHXu0JBYDSTxkH1MQK6MlrY.jpg)
![Catch the Wind](https://image.tmdb.org/t/p/w300/s2W1I9qLUSp8wqqcdfMYY3o1J61.jpg)
![Two Successors of the Sky](https://image.tmdb.org/t/p/w300/cqx2shUgF3Z4QxYa6rXJkDhmzNp.jpg)
![Reborn's Trial](https://image.tmdb.org/t/p/w300/yaLBrqIeeW8BG3XhkB8UpDUXnqG.jpg)
![A Path Is Closed Off](https://image.tmdb.org/t/p/w300/wpKfFIiTG4W7cftsCHCjEIm5fnl.jpg)
![Once the Rainbow Is Complete](https://image.tmdb.org/t/p/w300/yE4oqfTjinYRsbY0zlCzbpAwFEA.jpg)
![A Boss' Resolve](https://image.tmdb.org/t/p/w300/nkk04hJR8tPdi297U0FYAc4cBmz.jpg)
![The Final Seal](https://image.tmdb.org/t/p/w300/hL1nqp6T3ghEQ5q1tqBIwLjPHic.jpg)
![To the Next Battle](https://image.tmdb.org/t/p/w300/chtNyFpQzKWNJ4Z5Gso7k6z1KVu.jpg)