Arc 9The Sea Train and Dressrosa
Rossi helped restore Water 7 and commissioned Tom to build a Sea Train, then brought Dressrosa under the Donquixote Family’s control and established relations with the Tontatta. The arc left the Family gathered aboard the completed prototype as Tom prepared to start it, while Rossi learned the Marines planned a Buster Call against Douglas Bullet.
- Rossi funded Tom’s Sea Train and railway project, restored Water 7’s shipyards, and left the city’s security to the Family before sailing with Doflamingo toward Sabaody.
- Rossi and his crew traveled through Fish-Man Island, rescued captive mermaids, met Neptune and Otohime, and took Jinbe aboard after he decided to watch Rossi’s intentions.
- Rossi and Doflamingo reached Dressrosa and challenged King Riku’s army to a contest, where Vergo defeated the hundred-man team before Kyros won their unarmed bout.
- Rossi stopped Kyros’s return duel with Vergo, defeated Kyros in a single sword strike, and installed Doflamingo as king while allowing Riku and Kyros to continue serving the people.
- Rossi secured the Marines’ acceptance of the takeover and negotiated with the Tontatta Tribe, while Doflamingo and the Family defeated Meiteer and the Deathwind Pirates.
- Rossi refused to raise Dressrosa’s taxes, promised its wealth would stay on the island, and sent Vergo and Diamante to oversee the kingdom as he returned to Water 7.
- Rossi crossed the Red Line with Doflamingo and Jinbe, where Tsuru told them the Marines planned a Buster Call against Douglas Bullet after his challenge at G6 Base.
- Rossi arrived at Tom’s Workshop, where Trebol presented the completed Sea Train prototype, and Tom prepared to start it as the assembled group heard its whistle.