Rebirth in Magnolia: The Hidden Origins and the Empty Throne

After Ulquiorra is disgracedly defeated by Ichigo on the roof of Las Noches, Ulquiorra finds himself before the soul king, where the latter proposes to him a new opportunity for life, but in a new world. Where Ulquiorra will finally find the opportunity to understand the heart. Will Ulquiorra succeed in understanding the heart? What the reasons for making the soul king revive him?