Asagi Suou, 17 years old with a short pale-beige hair, manager and supervisor of Highlander Railway Academy in Kivotos, she covered her right eyes with an eye patch, she has a halo and bullet proof skin but not invincible .
She's the boss of the Tachibana twin, Hikari and Nozomi, she got older-sister vibe when it comes to the twins, give a caring attitude, despite scolding them a lot.
She has a quiet nature but with a strong sense of duty and obedience, like a seasoned soldier.