Banana Fish
Nature made Ash Lynx amazing. He was made a killer by Nurture. A runaway brought up as the adopted heir and sex toy of"Papa" Dino Golzine, Ash, currently at the rebellious age of 1, forsakes the kingdom held out by the devil who raised him. But the hideous secret that drove Ash's older brother mad in Vietnam has suddenly fallen into Papa's insatiably ambitious handsand it's really exactly the wrong time for Eiji Okamura, a pure-hearted young photographer from Japan, to produce Ash Lynx's familiarity...
(Source: Viz)