One night, a high school girl named Mika-chan suddenly experienced severe abdominal pain. Writhing in agony, she was startled when a tiny fairy appeared before her, revealing a shocking truth: bacteria causing food poisoning were multiplying at an alarming rate inside her stomach
With only 24 hours to act before her life was in danger, Mika was shrunk down to a microscopic size to enter her own body and fight for her survival. Inside, she faced terrifying bacteria and viruses attacking her at every turn. To make matters worse, she found herself caught in the midst of a colossal battle between her immune cells and the invading pathogens.
Will Mika survive this extraordinary challenge within her own body?