Losing oneself... Can you understand that feeling? This countryside is a testing ground. Akane and the others are clones replicated with their brains as the main body, and it has been revealed that the mastermind is hidden among their classmates... Caught in a gamble to "identify the mastermind" where a mistake could lead to death, Akane ultimately makes a decisive choice... A time-jumping suspense that erodes friendship, trust, and even the future!