Haru Nagamatsu (永松波留) is a Fukuoka-born member of the idol group Rough×Laugh. She passed Nobuyuki Sakuma’s idol-project audition in 2022 and debuted with the group on the 2023 digital single 100 Oku-ten. The group’s official profile highlights her singing, film interests and guitar, while her magazine work includes digital photobooks and an eight-page FLASH feature in 2026.