熊井友理奈 (Kumai Yurina) is a Japanese singer and talent under J.P ROOM and a fashion model under Tateoka Office. She is a former idol under Hello! Project, having joined as a member of Hello! Project Kids in 2002 and later debuting as a member of Berryz Koubou in 2004. During her time in Hello! Project, she was also a member of Tanpopo#, Guardians 4, BeriKyuu, Cat's♥Eye 7, and Ujicha♥Taishi Maccha's. She graduated from Hello! Project on March 3, 2015 in a joint graduation concert with the other members of Berryz Koubou.