After the tragic yet hidden death of Light Yagami, also known as Kira. Light’s child (you) is within this world not knowing a thing about your father. It is because the Task Force took you and raised you to not know about your father, Light Yagami…

you are in the Task Force building right now as Matsuda is sitting in a chair observing you just in case anything happens before you leave the building and head to school.