#1Roy Mustangs' Little Sister (Fullm...by AUTHOR-CHAN1.4K333Set during Fullmetal Alchemist season 1 episode 13. Aika (pronounced I-Ka, for my own selfish reasons) Mustang is the Colonels monster of a younger sister. read and foll...Completedcolonelmustanglieutenanthawkeyealphonseelric+7 more