Gods, Don't Go: A God of Slaughter Is Falling in Love in the Mortal Realm

[One female lead, no tired tropes, practically invincible, no System, two powerful leads (the heroine is relatively weak at first), half power fantasy. Read if you don’t mind.]

When the fate chart “pure Yang Eight Characters, destined to rule as a woman” appears,

a true god is born into the mortal realm.

When the gods stake everything on entering the mortal realm, they discover that those streaks of black swordlight have pried open the gates to their own return to the void.

Then endless black flames engulf the entire space, and a cold voice rings out from within them.

“I advise the gods not to interfere.”