As of my knowledge cutoff date in March 2023, Yu Tomofuji is a Japanese manga artist best known for her work on the fantasy romance manga "Niehime to Kemono no Ou" ("The Sacrificial Princess & the King of Beasts"). This series, which started in 2015, tells the story of a young girl who is destined to be sacrificed to a terrifying beast king but instead becomes involved in a complicated and heartwarming relationship with him. Tomofuji's art is characterized by its detailed and expressive character designs, as well as its ability to convey emotional depth and fantasy elements. Her manga has gained popularity for its unique blend of romance, drama, and fantasy settings, appealing to a diverse audience of manga readers. Beyond "Niehime to Kemono no Ou," there is limited information available in English about Yu Tomofuji's other works or personal background.