Acheron or Raiden Bosenmori Mei, appears as a tall woman with pale skin, long plum-colored hair that covers the left side of her face, and bright violet eyes with pink highlights and diamond-shaped pupils. She often carries a long katana beside her. She walks and travels over the cosmos with the Death and Devastation. She is self-Annihilator of Nihility… she never pulls the blade out of Katana’s cover because no one could survive after she does it…