The Kain server was one of the servers merged on June 24th, 2008. Along with the Lionna server, it became Aria.
Who is Kain?
Kain is a Gladiator who turned his back on his life as an Elmore aristocrat, a life that involved constant scheming and conspiracy. He started his journey as a wanderer for training himself in the art of swordsmanship. He had received swordsmanship training and therefore had felt confident about his mastery of the sword. However, after he was defeated by an unknown swordsman, he had to reconsider his "forte." He made a firm resolution that if he ever runs into the unknown swordsman again, who taught him the bitter taste of defeat, he is determined to win this time. For this sole purpose, he has been devoting himself to swordsmanship training day and night. Currently, he is traveling in the Aden kingdom to accomplish "Conquest of the Continent," one of the tasks of the "Training of a Swordsman."