One Piece: The Strongest Swordsman - Chapter 68: Secret Room

The heavenly God of Warriors was betrayed by his true love and murdered at the very first night of wedding just because his merits made the monarch insecure. Reborn in a hundred years, Nie Tian would be an appendage no more. Reach the welkin, reverse the fate, reign over the heaven and reconstruct the worlds.

- Description from novelupdates

He doesn’t just tame beasts—he conquers everything.Nothing is off-limits to Rex. Beasts. Humans. Gods. Artifacts. If it has a will, it belongs to him. He tames the untamable.“I’ll choose death over submission.”Foolish!“I’ll tame the soul—or devour you wholly.”Ding…[Taming {Primordial One's Soul} Successful]From the lowliest creatures to the most powerful gods, Rex's reach knows no bounds. His taming system grants him power over life, death, and even fate itself.No beast too mighty. No human too proud. No artifact too ancient.What if even the very consciousness of the world bows to him? Will he stop there or search for a bigger ground to dominate?---What to expect?- Overpowered MC- Fast to medium pacing of progression.- A fantasy world filled with diverse creatures and power system.- Join Rex and uncover the mysteries of this magical world!

Among the demons, the supreme ones are called “Great Saints.”

Varian only wanted to end the war with the Abyssals and bring peace so that no one would lose their dad like he did.