Fear and Love and Everything Between

Twin sisters Miyako and Saiko Moriko are the Third and Fourth seats of Squad Three. Because of their unique linked Zanpakutos, they are chosen to help Toshiro Hitsugaya's team in Karakura Town when the Arrancars start showing up. But things get complicated when Miyako discovers she likes redheads, and Saiko's into, well, a psycho. Renji/OC, Grimmjow/OC