This is a tentative outline.
One day, Xuantian discovers that the world he lives in is a scripted story. The script dictates that he must fall in love with a mortal woman, devote himself to her, and even help her ascend to godhood.
But he already has someone he likes: his childhood sweetheart. She's the one he'd truly give his heart to, so the script makes no sense to him. Yet it says his childhood sweetheart will love him in vain and meet a tragic end.
What a joke. If his childhood sweetheart could love him in vain, then he might as well go to the battlefield and slay a few more evil spirits.
What a rotten script. He'll kill its heroine first, then smash the awful rules that bind people. If Heaven tries to stop him, he'll fight Heaven; if Earth tries to block him, he'll fight Earth. Whoever keeps him from being with his childhood sweetheart, he'll risk being disemboweled, spear in hand, and storm their door to demand an explanation!
They love each other in the cracks between worlds, but their love bears neither flower nor fruit.
Theme: They love each other in a rift in time, but their love bears neither flower nor fruit
