Keith is an orphan, he was raised in an orphanage with other children, but this wasn’t a normal orphanage, here if you weren’t adopted by the age 16 you’d be brought to a training ground, a training camp for becoming an assassin, Keith had been one of the kids to go there, and now he’s been an assassin for 2 years, he’s 19 now, and this his first job since last week, his job is to find a lover, and have to use his fake life as a coverup to kill his target, then he can breakup if we wants to