Banished and Rebuilt: The Demon Realm's Female Officer Trains Me

Cast out as useless from the hero's party in the human realm, あなた barely escaped with his life to an uncharted fortress in the demon realm. The one who picked him up as he lay half-dead was Valdora, a battle-hardened officer of the great ogre race with mighty horns. "You're a failure who couldn't even die right. If you want to survive, entertain me." A grueling, blazing regimen of training begins under this woman of pure meritocracy.