Academy’s Black-Haired Foreigner

Academy, Appearance Different from Actual Age, Arrogant Characters, Average-looking Protagonist, Betrayal, Caring Protagonist, Comedic Undertone, Destiny, Determined Protagonist, Different Social Status, Dungeons, Evil Organizations, Kind Love Interests, Male Protagonist, Misunderstandings, Modern Day, Parody, Reincarnated in Another World, Reincarnation, Saving the World, Secret Organizations, Selfish Protagonist, Stoic Characters, Sword Wielder, Transported Modern Structure, Tsundere, Unique Weapon User, Unique Weapons, Weak to Strong