Zhu Yun is a miserly sword cultivator in the cultivation world. Her only hobby is taking her sword, Heavenbreaker, and challenging the experts of the various sects.
One day, Zhu Yun's sword snapped in two. Just as she was devastated, a thing called the System found her. If she went back a thousand years and saved a young man named Yin Wushuang, giving him a future of his own, the System would reward her with a peerless material to repair her sword and make it the greatest sword in the cultivation world.
Zhu Yun was shamefully tempted, and accepted the mission.
Yin Wushuang was poisoned before he was even born. He was blind and his meridians were blocked. His clan looked down on him because he was not favored, and freely insulted, mocked, and beat him. His father sent his mother to a small cultivation sect to serve as a cultivation furnace, all in exchange for protection. The Crown Prince trapped Yin Wushuang in a cage with a beast and delighted in watching them face off.
The name Wushuang, meaning peerless, was nothing but a joke to him.
Until she appeared, like a cold sword drawn from its sheath, cutting down every last bit of malice.
Her smile was radiant, her eyes and brows full of boldness. Like a plum blossom blooming in the bitter cold, she stood before him.
Zhu Yun: Kid, get out of the way. I'll carry the whole team. You, stay hidden!
(At first, the heroine is warm toward the hero because she wants to repair her sword. Later, she comes to see him as family, and then...)
Theme: I hope someone will lend a hand when you find yourself in dire straits.