Hiromu Sawano (澤野 ヒロム, Sawano Hiromu, born 1991) is a Japanese AV actor and former firefighter. He is also known as Muscle Sawano (マッスル澤野, Massuru Sawano) and Hiromu Sawano (澤野 宏武, Sawano Hiromu). His nickname is Fireman, a reference to his previous job. He was originally a deputy fire sergeant working at the Haga Branch of the Moka Fire Department. His hobby was bodybuilding. In April 2016, when he was 24 years old, he made his first appearance in an adult video (AV) as a side job in a scene with Mari Rika (Narumi Urumi), a popular lolita actress. By August 2017, he had appeared in about 50 to 60 AVs, earning from 10,000 to 30,000 yen per ejaculation fee, about 900,000 yen in total.