Aisu

Historical records:

Thirteen years ago, a Thousand-Vein Lotus matured into a spirit, bringing about a celestial upheaval. It was captured by the cultivators, who stripped its skin and broke its bones, refining them into magical items and pills, and forging sacred elixirs and artifacts from its soul.

Immortal Tianshou manifested inside the furnace and rescued the Thousand-Vein Lotus's remnant soul. Using his divine powers, he helped it reincarnate. Since its remnant soul was steeped in hatred, Immortal Tianshou entrusted it to the Demon King of the Northern Wastelands and used the Heart-Washing Spell to seal away the memories of its past life. It reincarnated as a mortal named Ai Jing.

The incarnation was entangled in this karmic fate and could not return to its true body, so it reincarnated as well. After being ambushed by the Demon King of the Northern Wastelands and struck by the same Heart-Washing Spell, it chose the treasured sword Yaoguang in the Sword Mound and was born from it. It landed and grew into a little child with the wind. Since it had bonded with the Yaoguang Sword, it was named Su Yao. At twenty, Su Yao reached the peak of Foundation Establishment and became the foremost disciple in the cultivation world. By order of Immortal Tianshou, Su Yao took Ai Jing as a disciple.

All right, here's the question: is the main couple Ai Jing and Tianshou, or Ai Jing and Su Yao?