The Killing Empress

I made my first love the Emperor, only for him to have an affair with my cousin.

How dare they betray me, Vivian, the only daughter of the Duke of Karlsruhe!

I died vowing revenge in my next life, but I returned so quickly?

Oh dear, I’m stuck in a time loop.

My resentment won’t disappear no matter how many times I kill them. Fine, just returning what they did feels like a loss, so I’ll add some interest.

So, I hired Chris, the future Sword Master, but something’s odd about him.

“Did you lie to me? You said you’d marry me!”

When did I say I’d marry you? I said I’d get you married.

Vivian, who promised to find him a bride if things went well, has somehow become his future wife.
And, for some reason, the Duke of Karlsruhe makes him a strange offer.

“What do you think about becoming the Emperor?”

What is this strange turn of events?

Will Vivian be able to get her satisfying revenge, with interest, and find happiness?