The youngest of the Sumire Triplets (Amano, Kazeno, and Raino Sumire) and the only girl. Raino crossdresses, taking on an appearance and personality of an Ikemen and is skilled with make up. Her make-up skills are so convincing that she could effortlessly disguise Rokudou as a cute girl. She shares Rank 5 with Kazeno in the Onishima Alliance.