Solstice - Manhwa

A disgraced agent is reinstated only if she infiltrates the life of a powerful heir her former lover who once betrayed her. Posing under a new identity, she gains his trust and enters the one place no one else has reached. But as the mission unfolds, she’s drawn to him against her will. When her cover is blown in a near-fatal incident, vengeance becomes her goal until hidden truths about him unravel everything she thought she knew.