At the age of seven, the very short-lived child prodigy, who was growing too fast, returned to the immortal world to prevent his abnormal growing. From then on, with his gifted brain and wisdom he obtained from earth, he walked in path immortality to became the legendary god to return his normal life... (Source: MU)

The animation tells the story of Xiao Shuai who has gone into a cool running world by accident and is embroiled in a dispute between parkour colleges.

An unaired thirteenth episode of Soushin Shoujo Matoi included with the second BD box set.

The World of Immortals, it is the world every mortals long for. For many, it is an eternal glory to distort the dimension and enter the World of Immortals. But the vicissitude of time is simply merciless, the legends regarding immortality had long been forgotten. However, a miracle shall rise once more! An immortal was about to distort the dimension with martial arts and cut all ties with the mortal world. The protagonist, Xiao Chen, was caught up in it and accidentally brought to the World of Immortals. What will they find in the vast world beyond the rift? (Source: MU)