The Strongest Siblings in History

One day, the world's strongest pink-haired psychic's foolish parents brought home a little sister they had found.

The girl was sweet, adorable, and lovable. She had their parents wrapped around her little finger, and they did everything she asked. Her classmates also saw her as a little angel and showered her with praise.

But only the psychic knew what this little sister was really like. In truth, she was

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