D.E.M.O.N.S: Getting Summoned Weekly isn't so Bad - Chapter 6: ...Peace in Equal Measure

I just left an honest review, and I was reincarnated. But not into the novel I criticized—into the world of [SSS-Class National Power Heir] .I reincarnated as Baek Seo-jun, the older brother of the original protagonist, faced discrimination, and was discarded as a sacrifice.And then I experienced hell.With the power of the final boss, I will exact revenge on everyone—whether it’s the original protagonist or the villains.[The protagonist who has gained the power of the final boss]

The celestial celestial beings who lived for more than 100,000 years were born and reborn in a small monk in a human world.
His motto: “It’s not as good as a medicinal medicine for ten years of hard work.” “Even if you practice a copper-iron bone, it’s not enough for my soldier’s attack.”

- Description from Novelupdates

Can she melt the ice in Northendell... and his heart?Arielle is the forgotten princess of the Nieverdell, a country blessed with the warm sun all year round. She was sacrificed by her family to become the prisoner of the Northendell Kingdom because of the sins of her brother, the crown prince.In the kingdom covered by eternal ice, Arielle met King Ronan D. Blackthorn, a man full of mystery.King Ronan was cursed. On a full moon, he would lose his human side and turn into a werewolf. Weirdly enough, ever since Arielle stepped into his life, he could slowly control his animal instincts.But great power came with its own consequences. Arielle and Ronan were faced with a difficult choice:Lift his curse or lose Arielle forever.