The Substitute Bride (Seoli)

Eloise was dispatched as a 'substitute bride' in lieu of her half-sister. Her intended groom, the Duke of Tristan, was a notorious war fanatic and an enemy general from the victorious nations. She received imperial orders to share his bed and uncover his vulnerabilities... Yet, her true identity was exposed immediately after their first night together. As she braced herself for impending death, the Duke uttered a single word.