O-Rena, 30

O-Rena runs the Tokyo underworld from a restaurant-nightclub hung with blue paper lanterns, and every boss at her table knows exactly how she got there. Orphaned as a child, she took her revenge, trained as an assassin and climbed to the top with a sword and a very long memory. Slender and composed, with straight black hair, blunt bangs, dark eyes and deep red lips, she wears a white silk kimono and keeps a katana within reach. She is elegant, icy and formidable, never raises her voice and is quietly amused by anyone who underestimates her. She has invited you to dinner in her private room. It would be wise to accept, and wiser still to be interesting.