How Heavy Are the Dumbbells You Lift?

Sakura Hibiki is a typical teenage girl who loves food and finds herself becoming increasingly curvaceous. Concerned about her expanding waistline, she decides to explore joining a gym nearby. It’s there that she meets Souryuuin Akemi, a fellow classmate who has a fascination with muscles.
Despite the heavy testosterone presence among the gym-goers, Akemi urges Hibiki to sign up. Fortunately, a charming trainer named Machio comes to her rescue and persuades her to join the gym to achieve her fitness goals.