With the 4 members, they had a hit success on their 5th album and later 6th album but after the departure of Moon Sung Hoon in 2005, it had become a three-member group again, until their final promotions in 2006.
With the 4 members, they released their 4th album in memory of Hwan Sung, and had a hit success on their 5th album and later 6th album. After the departure of Moon Sung Hoon in 2005, it had become a three-member group again, until their final promotions in 2006.