The Siren: Becoming the Villain's Family

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Description:
Aria offered a contract marriage. To Grand Duke Valentine who was said to have sold his soul to the devil. So she could protect herself and him.

"Marry me."

Aria passed him a note which asked for his hand in marriage with her little maple leaf like hands.

"It's a contract marriage so we'll divorce 10 years later..."

The young master grabbed the note Aria was writing and ripped it to shreds.

"So where do I stamp it?"

"You told me you'll divorce me once we're older."

The young devil grew up and kissed her forehead.

"Since we have become adults, we have to instead make a contract for adults."

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“If there is a next life, I will save you.”

Aria is the last remaining siren, a monster who bewitches humans with song. Shackled, she is forced to sing to nobles until she coughs blood....