mihimaru GT is a Japanese urban pop unit. They debuted in 2003. mihimaru GT is a duet made up of composer, lyricist and vocalist, miyake (miCKun) as well as vocalist and lyricist hiroko. The group was formed due to the joint management of the two members during their solo careers. Before forming mihimaru GT, each member had a relatively quiet career with little to no major hits. To remind each other that the success of the group is from contributions from both members