I’m the Wife of the Yandere Second Male Lead

Lucian Kardien.
He was the hero who led the war to victory.
He was the second male lead who loved the female lead so much that he turned yandere.
And I’m the fiance who will be killed by his hand,
Of all things, why did I have to transmigrate here! I must somehow increase his likability to prevent a “surprise” ending.
With a toothy grin and my clapping hands of approval, I’ll help him connect with the female lead!
But what is this reaction?
“Lady Pernia…. please don’t provoke me anymore.”
…….Why is it still a scary ending!
The Blackened Second Male Lead’s Wife Series / 흑화하는 서브 남주의 아내랍니다 / I’m the Wife of the Yandere Second Male Lead