Leonard, the fiancé of Adela, the marquis's daughter, since childhood, had gradually begun to prioritize his stepsister.

"They had only just become family; perhaps they needed time," Adela thought. She quietly watched, even when his stepsister barged into their tea parties as an engaged couple or when their date plans were unilaterally canceled.

But one day, Adela overheard their conversation. It was a dreadful one, its content slighting Adela and making it sound as if the two of them were in love.

If he loved his stepsister that much, he should just marry her.

Thinking this, Adela began to take action to facilitate their union.

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