What we don't know can still hurt us: Showdown

The Very First Massacre
Blood dripped on the mouth of an unnamed shinigami who was unfortunate enough to came across a monster. He tried to run with the use of shunpo, but he was caught rather quickly by the beast. Impaling the shinigami with his claws, "The Beast" or someone once called Margin Heart showed no mercy, even showing his sadism by grinning while watching the shinigami slowly die. With his other hand, Margin grabbed the face of the shinigami and blowed it into a bloody mess.