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When he was 7 years old, Shinichi discovered that a girl claiming to be his sister had appeared inexplicably at home. The strange thing was that no one around him, including his parents, noticed anything unusual.
After that, the world around him became weird from time to time...
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"I will definitely expose your true identity!"
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The 13-year-old Shinichi escaped the ambush of a shadow. The shadow looked like him, but had a strange expression on his face.
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"This time, it's a game of time~"
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Yiye was swinging on the swing and looking at the world she had built was like watching a fun play.
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