Answer
Jun Matsumoto debuted with Arashi in 1999. Arashi is a Japanese boy band formed in 1999 by Johnny & Associates. The group consists of five members: Satoshi Ohno, Sho Sakurai, Masaki Aiba, Kazunari Ninomiya, and Jun Matsumoto. Arashi has released 10 studio albums, 55 singles, and has sold over 40 million records worldwide.