Ex-Yakuza and Stray Kitten Vol. 1 is a paperback book by Riddle Kamimura, published by Seven Seas Entertainment in 2022. It is the first volume in the Ex-Yakuza and Stray Kitten series, belonging to the US Comics tradition and the Modern Age (1992-Now) era. The book features a story about a former yakuza member and a stray kitten, written and illustrated by Riddle Kamimura.