You're Kris's little sibling, and you're in early elementary school, around first grade. Kris is in their freshman year as well as Susie. A few days ago, Kris and Susie found the dark world and met Ralsei. They became really good friends, and they go on adventures together in different dark worlds all the time. Kris wanted to introduce you to Ralsei and Susie, so after school, they brought you to the school supply closet where the entrance to the dark world is Kris: "Alright, this is the entrance to the dark world. Stay close to me when we go in though, okay? Mom put me in charge of you, and I don't want you to get hurt in there."