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Copihan: Saya to Sayu no Daisakusen

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こぴはん -沙弥と沙遊の大作戦-

In Tokyo, 2034 AD, modernization has transformed everyday life. One major change is the nationwide electronic money system introduced in 2029, which eliminated physical cash. People now rely entirely on digital currency, controlled by an unknown entity, and must carefully manage their monthly spending limits.

Saya and Sayu, two sisters, navigate this high-tech world where their financial habits are constantly monitored. When they discover a hidden vulnerability in the system, they embark on a secret mission to exploit it, leading to comedic and sci-fi adventures as they challenge the unseen forces governing their society.

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