7cm was a group formed by Ito Mana, Imayoshi Megumi, Umeda Haruka, Kaida Juri, Kato Mami, KONAN and Hosoda Miyuu after their graduation from SDN48. They released a mini album under avex.
On July, 2014 Umeda Haruka, Kaida Juri, Kato Mami, and KONAN left the group due to agency problems. The group ended on December 31st, 2014 to become a new group, called TRY OUT with Imayoshi Megumi being the only original member. The latter group ended on June 6, 2015.