After a routine post-school eating spree, Hibiki Sakura, a food lover, gets nudged about her expanding waistline by her pal Ayaka Uehara. Failing to shed pounds solo, she enrolls at the fresh Silverman Gym. During her debut, she encounters Akemi Souryuuin, the school's darling and student council head. Little does she know, surprises await. The gym isn't just packed with elite athletes but also harbors Akemi's unexpected muscle obsession! Repulsed, Hibiki tries to flee but is intercepted by coach Naruzou Machio. Enchanted by this fitness guru, she enlists in the gym. Now, on a whim, Hibiki embarks on a journey to adapt to this new fitness-focused life.