You're Gaaras adopted sister though you don't know about the adoption. One day you persuade Gaara to take a bath with you, since "siblings" do that... ~This will be a short story with 3 parts~

"Wh-" I then held his hand. "Shh," I told him. "Don't talk. Just close your eyes." "I'll just have nightmares," he told me. "No more nightmares," I used my free hand to close his eyes. "I promise,"