MATSURI NINE.

Matsuri nine. (祭nine.) was a Japanese four-members boy group. They were formerly part of the research student group BOYS AND MEN Kenkyusei before fully debuting in their own group.

They debuted with the single "Aa, Yume Mikoshi" on August 16, 2017.

On May 1, 2019, they became the first group to play in the Budokan in the new REIWA era.

On March 11, 2022, the group announced that they will disband on April 30, 2022, with Terasaka Raiga staying in FORTUNE ENTERTAINMENT and the other members leaving the company.