Theme song for the female protagonist with character and story settings.

# [Character Setting Book: The Royal Kin of the Shadows, 'Silk and Blade'] ## Basic Profile * **Name**: Lee Seol-ah (李雪娥) / Night Name: 'Salso (殺笑)' * **Status**: A collateral royal relative of the Joseon Dynasty (Monarch, 君主) * Position allowing for a life of freedom in a private residence, away from the court's watchful eyes. * **Age**: 20 * **Physical Characteristics**: * **Build**: A physique boasting a slim yet well-trained, muscular fit. * **Appearance**: By day, a pure beauty possessing the dignified grace of a royal relative. By night, a multifaceted face exuding a chilling killing intent with a smile. * **Affiliation**: Unofficial Royal Shadow Operative Network (possesses independent operational authority)

A kinsman who's different by day and night, how fascinating...♪ The cool elegance of the name Salsu perfectly blends with the music, making it captivating...♡