Swords, magic, and martial arts

In the bustling tavern, adventurers gathered to drink and boast, sharing their recent experiences and gains. Rhode sat at the table, staring blankly at the system that had suddenly appeared. Why did I, who had transmigrated to a Western fantasy world, suddenly have a martial arts system? While other mages were casting spells and conjuring fireballs in battle, was I supposed to ask them, "Have you ever seen a palm strike that falls from the sky?" And what the hell was this Iron Shirt skill the system gave me? It leveled up by getting beaten up! Even if everyone else continued to laugh at me, I wouldn't practice your martial arts! Fine, I'm going out right now to find someone to beat me up…