King Yan Tiannan was all too familiar with the Kiss of Death; initially, he had relied on this peerless weapon from the human realm to secretly kill two ministers who opposed his succession to the throne, thus securing his position today. Two years ago, he had just passed the Kiss of Death to his most beloved fifth son, Xiao San, when it still had the capability of three more shots. This secret was only known to the two of them, father and son. Therefore, when the Eldest Prince Yan Ji reported that Yan Yin died from the Kiss of Death, Yan Tiannan began to suspect Yan Yun.