Love, Duty, and Lies....

First Book of the Zodiac Series:It's been three years since Yui was rescued from prison by the government and six years since he was rescued from Pot Pol's Regime. But when he was sent to seduce and retrieve information about a drug from a Mafia boss, but he accidentally killed him. He would've committed suicide from the failed mission but his boss made him swore to not. But a mistake is a mistake so he was sent undercover back inside to his past three years ago in that prison which was suppose to be the root of the problem....But can Yui face his past and complete the mission?