This assault pitted the Vallaido pirate clan's fleet against the Seville pirate clan, its long-standing adversary. Because the Sevilles received reinforcements from Imperial starships, they completely annihilated the Vallaidos.
By the time the Galactic Civil War occurred, the Seville Family and the Vallaido Clan had been competing pirate groups for numerous generations. Given that their animosity was common knowledge, nobody expressed surprise when the fleet of starships belonging to one clan launched an attack against the other.
At that time, the Seville pirate clan was under the leadership of Yearo Seville, who forged an agreement with the Galactic Empire. According to this agreement, the Seville fleet gained Imperial starships as additional support. Using this increased firepower, the Sevilles launched an offensive against the Vallaido fleet. The Vallaido fleet was overwhelmed and suffered complete destruction.
Upon learning of this, Siro Simito, a former member of the Vallaido pirate clan, was horrified. Subsequently, Simito became a member of the anti-Imperial Alliance to Restore the Republic and started working covertly for General Airen Cracken.