Hotaru Kazuko (螢和, Kazuko Hotaru; lit. "Firefly, Child Of Harmony) is a shinigami whose a member and one of the original ones of the group called the Jūsanseiza which was founded by the former supreme commander of the Royal Guard but is now being led by the Quadrumvirate Hotaru is known by many of its members as The Silent Destruction mostly because of his different ways of causing conflict and Extinction, another moniker of his, the basis of this maybe because of his Konton ga kaijū which literally makes him a unstoppable killing machine. Once a seated-officer of the Gotei 13, he took part of the Quincy-race genocide, and even killed the strongest quincy at that time. He was also once a Royal Guard, a mashall of the Ring of Three, whether he chose to leave on his own or has exiled is unkn