"On the Line" is inspired by Isa Shimoda, a butch gender nonconforming immigrant who served meals to Japanese American tuna cannery workers in her restaurant on the docks of San Diego in the 1930s. She was known for her masculine attire as well as her skills at naginata, a sword-based martial art practiced by Japanese women. Her restaurant was a refuge for the women who endured gruesome hours cleaning fish and lived in meager housing shelters known as "fish camp." Shimoda has two sets of wartime records from the incarceration camps—one identifying her as female, the other as male.