Ultraman R/B is a Japanese tokusatsu television series from the Ultraman franchise. It follows two brothers, Katsumi and Isami Minato, who transform into Ultraman Rosso and Ultraman Blu to defend their city from monsters and mysterious threats. The series focuses on family bonds, sibling teamwork, and the challenge of balancing ordinary life with heroic duties. It is part of the long-running Ultraman television line and features a mix of action, drama, and science-fiction adventure.