Information:
The group's name is short for "Five Treasure Island", each of the five members presumeably being a treasure. This group debuted in Korea (in 2007) on the show "Dugeun Dugeun Yeochinmandeulgi" (officially translated as "Wanna Be My Girlfriend?").

Part of the group's first album was produced by many Japanese composers who were well known for composing for SMAP. This fact would lead the group to make a Japanese debut in 2008 with their single "The One".

In 2009 the member Oh Won Bin (Guitar, Harmonica, soft Vocals, Rap) would leave the group and be replaced by Song Seung Hyun as a guitarist and backup vocalist. This group continues activity in Korea.