Wu Yuan is a full-level swordsman who can kill anyone he catches.
Until one day, she met a quirky, playful and cute girl named Jian Jian who was invulnerable to any knife.
Jian Jian fell in love with her at first sight and stayed by her side every day, calling her sister.
Wu Yuan was annoyed that she could not be killed and could not get rid of her, so he was forced to embark on a journey to find a way to kill Jian Jian.
Jian Jian clung to her every step of the way, playfully accompanying her to find a way to kill herself...
Concept: Cute, warm and cold
