Solstice

"Approach the only son who will inherit the crown. That's your mission, River Winstead."

Suspended FBI agent River Winstead is reinstated, and undercover. She's tasked with stealing information by becoming the lover of Alessandro, the son of her enemy and her first love who betrayed her.

"It's not just you who's changed, Alessandro. I've changed too."

Disguised as "Lily Gray," River approaches Alessandro and successfully enters his home, where none of his previous lovers have ever set foot. However, as the mission progresses, she finds herself helplessly drawn to this mysterious man, tormented.

However, an unexpected accident exposes her identity, barely escaping with her life.
Regretting her momentary wavering, River vows to kill Alessandro, but as she pursues his shadow, shocking secrets are revealed one by one...

"I have work to do. Just give me time. Just let me finish it... Then, you can sever my hold on me."

Alessandro, the only labels that could be attached to him were hatred and resentment. These emotions could never be called love.

Original Novel
Original Webtoon