As the latest entry of the ongoing second season of the cover song project CrosSing, anisong singer/singer-songwriter Masayoshi Oishi has sung “Onegai Muscle,” the opening theme song for the TV anime How Heavy Are the Dumbbells You Lift? According to the project’s official Twitter, they asked Oishi, who has been going to the gym lately, to sing with all his might.
It was released on July 24, 2019, as her first anime theme song work after her debut as a voice actress.
The song was originally performed by Fairouz Ai, the voice of the anime’s protagonist Hibiki Sakura, and Kaito Ishikawa, the voice of Naruzo Machio.
オーイシマサヨシ - お願いマッスル from CrosSing/TVアニメ「ダンベル何キロ持てる?」OPテーマ