One day, Light Yagami's spirit suddenly appears on Earth. He approaches his best friend Shuichi Nakamura (22 year old) from University. Light decides to enter Shuichi's body and eventually take total control of his body, to get revenge of Near. When he begins to slowly take over his body Shuichi starts to excel in tennis, also becomes popular with his classmates and his personality changes. With these changes in both personality and character, the other students are surprised by this, and become influenced by his adult like point of view. But soon, his friends realize the secret of his change.