Sometimes, when B was younger, he would stare in the mirror for hours and hours, trying to see weather or not he was different physically from everyone else. He knew he was different, anyway, in his mind.
He was fairly certain that other seven-year-olds didn't wonder what blood tasted like, or if death was something that would come quickly for them. He knew when each of them would die, of course, he could see it written above their heads along with their real names- something else that made him different from everyone else. But he knew that other students cared only for their homework, friends, and families. Not blood and death and killing and murder.
Sometimes when he was leaning on the wall or sitting on the floor in front of mirrors, he would blink and see something that did make him different than everyone else. For a few seconds, instead of a welcoming brown, his eyes would blaze a fiery red, burning like the sun and crueler than anything else B ever saw in his life.
The first time it happened, he screamed. He screamed and screamed and screamed while his parents tried in vain to calm him down- to see what was wrong. A few hours later he told them, "My eyes turned red, I swear! Like some sort of monster!" and they brushed it off, like it was of no importance. Four hours later, both of them died in a horrific car accident that B managed to convince himself was his fault.
Sometimes the red eyes would be there for a long time. Once, after he was inducted into Wammy's Orphanage, he was staring into the mirror while his eyes were red. A stood behind him, completely oblivious to what B saw. And two weeks later A had killed himself, another incident B was certain was his fault.
It was almost like the red eyes were a warning for death, because every time in happened, someone important died. Maybe it was someone in a high position of power for a big country, or maybe it was someone that B used to know. But it never failed, and after A's suicide, B's eyes stayed red, and it was B killing people directly, rather than indirectly.