Tensei Shitara Slime Datta Ken (WN) - Chapter 100 – Underground Labyrinth

An ultimate warrior, the one and only Alchemy Emperor, Ling Han, died in his quest to achieve godhood. Ten thousands years later, he, with the ‘Invincible Heaven Scroll’, was reborn in the body of a young man with the same name. From then on, winds and clouds moved as he set himself against the uncountable geniuses of this new era. His path of becoming a legend has begun once more. Of all eras underneath the heavens, I am the strongest!

- Description from Novelupdates

In the kingdom of Veridian, Prince Lucien Damon is known for his charm and charisma. But his kingdom is facing economic ruin, and his father, the king, in an effort to alleviate the economic strain on his kingdom has arranged a marriage between Lucian and Prince Alexander Silver of the neighboring kingdom of Avaloria.In the kingdom of Veridian, Prince Lucien Damon is known for his charm and charisma. But his kingdom is facing economic ruin, and his father, the king, in an effort to alleviate the economic strain on his kingdom has arranged a marriage between Lucian and Prince Alexander Silver of the neighboring kingdom of Avaloria.

Greed, envy, anger, gluttony, lust, sloth, prideThe 'Black Book' records seven sources of sin, which are also seven steps to ascend to godhoodOnce, I thought there would always be one sin suitable for meBut I never expectedEvery volume of the twelve military letters bears my name!

In her previous life, she was a highly respected Heavenly Empress, but on the eve of her wedding, she was betrayed and died by self-immolation!