Ryuta Osada was born in Tokyo. He moved to the UK in 2000, after graduating from Nihon University. He went on to study graphic design at the Surrey Institute of Art and Design and, after that, at Central St Martins College in London. In 2009, Osada returned to Japan, where he worked on several illustrated reference books for publisher Shinkigensha. He is also a historical advisor on Shinich Sakamoto's manga series Innocent.