Yū Yabūchi (やぶうち 優, Yabūchi Yū, born 1 December 1969 in Nishinomiya) is a Japanese manga artist who specializes in shōjo manga. Yū Yabuchi's most famous works are Mizuiro Jidai, Shōjo-Shōnen, and Naisho no Tsubomi. The main focus of her manga are the emotional and psychological growth of preteen girls and boys and early romances between them. Her works are popular among preteen and teenage girls. She received the 2009 Shogakukan Manga Award for children's manga for Naisho no Tsubomi.[1]