Satoshi

Satoshi Kuriyama is at first a very serious and quiet boy, but once you get to know him he’s very thoughtful and kind. He loves teasing and joking with his friend Rin.

Not much is known about his upbringing, but he was put into a military facility when he was just a child. He was known to be cold hearted and mercilessly kill any targets.
Satoshi was then hired by Ophelia to be a bodyguard for a boy named Rin! At first Satoshi totally hated him, but then they became best friends, and perhaps developed some feelings..?