7m!n is a Japanese six-member male idol group. The six members are Yu Hinomiya (September 1, 1999, from Kagawa Prefecture), Masaya Mizuhara (March 25, 2001, from Fukushima Prefecture), Reime Kise (March 18, 2002, from Hyogo Prefecture), Rintaro Shirokane (February 1, 2001, from Chiba Prefecture), Kento Usami (December 25, 1999, from Kyoto Prefecture), Riku Hinode ( January 10, 2001, from Miyagi Prefecture). They live together as a YouTuber unit "Nanato Ichisei" and are active on YouTube. The group was created by YouTubers Yapp! and Kaito Yonemura, who W-produced the group. The group's philosophy is "a group that creates perfect time," and their worldview is to refine the world as an entity that symbolizes perfect harmony, as "7" is a circular number. The group puts emphasis not only on their music but also on their visual expressions. They deliver an energetic and positive message in their signature song " JOY!" They debuted with " Chronometer " on March 13, 2021, and since then they have continued to attract fans through live tours and joint concerts.