Yu Yamashita, known professionally as 山下優 (Yamashita Yu), is a Japanese adult video (AV) actress born on January 8, 1989, in Niigata Prefecture, Japan. Standing at 165 cm with measurements of 88-58-86 cm (D cup), she entered the JAV industry at age 19, debuting on May 13, 2008, with Moodyz's "SEX wa Geijutsu da. Gen'yaku Bidai Sei Debut," where she was presented as an active art college student. Her career featured a variety of genres, including gal, creampie, esthetician, and even special effects like tentacle and heroine roles. Notable works include compilations with kira☆kira, KMP, Prestige, and GIGA. Yamashita appeared in numerous titles through 2009, showcasing her voluptuous figure, open-minded persona, and adventurous scenes ranging from public sex to orgies. With around 17 videos, she made a brief but impactful mark before fading from the scene, presumed retired.