
Quick answer — Maaya Sakamoto performed 2 anime themes, including "Replica" from M3: Sono Kuroki Hagane, "un_mute" from Revenger.
Maaya Sakamoto performed the anime theme songs "Replica" (M3: Sono Kuroki Hagane), "un_mute" (Revenger).
Maaya Sakamoto's first listed anime theme is "Replica", the opening of M3: Sono Kuroki Hagane.