SSS-Class Overlord: My Harem Rules the Realms (18+) - Chapter 80: Start of the Battle.

Transmigrating into a poor and mistreated young lady's body, what will the craziest alchemist of the seven realms now do?

Reborn as a sword, he lived for hundreds of years, and then he occupied the body of a 15-year-old prince.

Because her appearance was not breathtaking, the Emperor breaks off their engagement and bestows her instead to the bloodthirsty, ruthless, and cold-blooded Second Prince (Wang Ye).

On her wedding night comes endless humiliation, the genuine Princess Consort becoming a deserted women. A foolish woman before rebirth, she no longer expects his love. In this world, she must possess enough talent to awe those around her, carrying herself with composure and articulating with beautiful diction, override above the nine night.

- Description from Novelupdates