尾形春水 (Ogata Haruna) is a YouTuber and former Japanese idol under Hello! Project as a 12th generation member of Morning Musume. She graduated from both Morning Musume. and Hello! Project at the Morning Musume. Tanjou 20 Shuunen Kinen Concert Tour 2018 Haru ~We are MORNING MUSUME.~ tour finale on June 20, 2018 and afterwards retired from entertainment. In 2019, she returned to the public eye as a YouTuber, and in 2021, she became a member of the YouTube girl group, Youplus alongside other former idols who became YouTubers such as Nakanishi Kana.
