A massively multiplayer online role-playing game developed by the Korean company NTIX Software, released in open beta on May 10, 2005, and in Japan on November 24, 2005. It was modern-day school life online RPG set in Estiva Academy and So-weol Academy that solved the mystery of the "Endless Vacation Phenomenon", an event that spanned the entire game that resulted in the disappearance of all teachers and schools.
This game has been discontinued. In Japan, the servers were down in May 2010. In Thailand, the servers were shut down on March 29, 2011.