Sapphire

The world of mana has changed. The unclean from the dark worlds roam freely across the Great Continent, while the young masters of power disappear. But the younger sister of Queen Ruby is experiencing her own tragedy. For a fateful... mistake, Princess Sapphire is sent to the Castle of Light, from which she cannot escape until she tames her gift of fire. Prince Gronidel, a man whom Sapphire hates with all her heart, oversees the execution of her punishment. One day, he makes her a very strange proposal... Sapphire is eager to settle the score with her long-time enemy who offers her to marry him. After all, there is nothing sweeter than revenge! But why does he need this? And how could their marriage influence the fate of all kingdoms?