The selfish vocalist of a popular band and a cool and beautiful trainer. A heart-stopping cohabitation life! Shou is the vocalist of a popular band that is on the rise. He wants to sing his heart out, but due to his poor diet, he lacks stamina and always collapses after a live show. The boss of the band's office is unable to see this and decides to give Shou a trainer to help him improve his health and fitness. Shou is reluctant, but when he returns home, he finds a beautiful man standing in the kitchen and a delicious-looking meal prepared on the dining table...?