[Xianxia + reincarnation and trials + System + missions to win someone over across three lifetimes + playing the fool to catch the tiger]
The backstory: She is a deer spirit who has cultivated for a thousand years and is just one step away from becoming an immortal. So she descends into the mortal realm to undergo three trials of love.
He is a High God of the Celestial Realm. He defies fate and alters the Book of Marriage, all for the chance to share even the slightest bond with her.
When their red thread of fate is accidentally severed, he refuses to accept it and follows her down to the mortal realm to help her become an immortal.
