7fates: Chakho, Vol. 2 (Manhwa) (manga)

Under Haru’s tutelage, Zeha’s skills grow by leaps and bounds. But when his sword breaks from the strain of fighting the Beom, he’s forced to look for a new weapon in the last place he expected—a history museum. He picks up a rusty relic blade at Haru’s insistence, and his mind becomes flooded with visions of an ancient warrior! It seems that there is far more to the Beom invasion than meets the eye, and fate seems determined to bring together the seven warriors to stand against the coming storm!