Reaching above the clouds, from where the cherry blossoms fall, the heroine enter the gate of the Netherworld (冥界). There she is confronted by human-ghost gardener Youmu Konpaku. Youmu explains that she had been stealing the essence of "spring" throughout Gensokyo in order to make the Saigyō Ayakashi (西行妖), a youkai cherry tree, bloom perfectly as per her master's orders. The heroine defeats Youmu and hurries to Hakugyokurō (白玉楼), where the tree is, to get Gensokyo's spring back. There the ghost princess of Hakugyokurō, Yuyuko Saigyouji reveals that she had an interest in a corpse sleeping beneath the Saigyou Ayakashi from before her existence. In order to break the seal, the youkai cherry blossom tree needed to bloom fully and completely. Yuyuko and the heroine wage a fierce battle, to get the last "spring" contained in the heroine needed for the Perfect Cherry Blossom, and to reclaim Gensokyo's spring, respectively. After the heroine defeats Yuyuko, the Saigyou Ayakashi starts to lose its health. However, the seal has been weakened from the near-complete bloom, and the sealed soul is temporarily unleashed. The soul is revealed to be Yuyuko's, and the heroine dodges attack after attack until Yuyuko's soul is finally sealed once more. As a result of the Spring Snow Incident, since the arrival of spring was late, the hanami season became short, and was also the trigger for Suika Ibuki to an incident in a later game.