he eventually killed his father and was responsible for the coup, and sided with raikou to further his goals. after haku as oshutoru restored order to yamato, he revealed his intentions and proceeded to tusukuru, where he got the master key from hakuoro and headed back to yamato so he could restore humanity at the cost of the current race. there he gains the allegiance of the cursed humans, and dons a mask that the emperor had hidden away due to its uncontrollable power. after surviving being hit with an orbital cannon that destroyed the capital of yamato, he faces off against his uncle and allies and was finally vanquished by haku at the cost of his life. woshisu's mask basically turned him into witsarunemitea that looked similar to dii's form, but the powers were subpar to the real one's power.