For weeks, the immortal warrior Eron has been feeling the invisible presence of a woman. An angel-demon slayer is there to kill him. Or is he? Olivia claims she fell from heaven, renouncing immortality because she couldn't bear to harm him. Trusting - and falling in love with - Olivia could put Eron and his loved ones in great danger. Yet, this fallen angel with the huge blue eyes awakens the darkest passion within him. With a deadly enemy chasing him and his loyal companion, the demon of Wrath, determined to drive Olivia out of his life, Eron is trapped between duty and overwhelming love. And worst of all, another assassin has been sent to do what Olivia refused.