teenagerM

teenagerM is a Japanese boy band formed by Victor Entertainment in 2007. The group's original line-up consisted of five members: Hiramatsu Taka, Nakayama Keita, Tamagawa Hiramatsu, Member2, and Relion. Member2 and Relion left the group in 2012, and the lineup was subsequently reduced to four members.

teenagerM is known for its high-energy performances and catchy pop songs, which have gained a following in Japan. The group's debut single, "Start", was released in 2007 and became a moderate success. Subsequent releases, however, failed to achieve the same level of success. In 2012, the group's popularity began to wane, and the remaining members took an indefinite hiatus.

During their active years, teenagerM performed extensively in Japan, including regular appearances at concerts and live events. The group also participated in various television programs, including music shows and entertainment news programs. Their performances often featured choreographed dance routines and elaborate stage sets.

Although the group's popularity declined in the early 2010s, teenagerM remains a nostalgic figure in Japanese entertainment. Fans of the group still celebrate the group's music and performances on social media and online forums. teenagerM's legacy as one of Japan's pioneering J-pop boy bands continues to be recognized, even if their reign at the top was relatively short-lived.