Those years full of pain are the years of light ink
10 years ago, Qingkong walked away alone with the pain of losing his father.
Ten years later, Sunny returned from school and vowed to use the truth to comfort his father's soul in heaven. However, he met him at work and got to know each other. When they were ready to stay together in the mortal world, they discovered that he was an old friend from the case back then. . . . . .