Ryuuichi Sasaki, better known as "Killer" of the outfit "Killer Acid," is a Tokyo-based assassin operating out of the Tama district. Details about his early life are sparse—he grew up with his parents, and whatever killer instinct he developed seems to have crystallized during those formative years. He attended high school and completed two years of technical school, where he apparently honed his deadly skills.
The contradiction that defines him is pretty striking: he's genuinely fond of small animals, which also happens to be his main vulnerability. His weapon of choice is the Beretta M92.
Content compiled by AnimeList.moe from publicly available sources.
