Following trainees Heechul and Kangin, Yunho and Jaejoong joined the project group Four Seasons in 2002, but the quartet disbanded when Yunho and Jaejoong were selected to join Lee's new group in 2003.
Razem ze stażystami Heechulem i Kanginem, Yunho i Jaejoong dołączyli do grupy projektowej Four Seasons w 2002 roku, ale kwartet rozpadł się, gdy Yunho i Jaejoong zostali wybrani do nowego zespołu w 2003 roku.