The Distance That Grew

When the protagonist was little, her father's harsh upbringing of her and her older sister caused her sister to develop bipolar disorder. As the protagonist grew older, she became increasingly rebellious. She swore to be the "executioner" who would protect her sister. When their father drove her sister to attempt suicide again, the protagonist broke down emotionally. Just as she was at a loss, she suddenly bound to a wondrous System. If she completes the hundred tasks set by the System, she can save her sister.

Sister, don't be afraid. Hold my hand, and let's keep going together, okay?

This novel and its characters are entirely fictional. Any resemblance to actual people or events is purely coincidental. Do not imitate.