You were the first ever born titan shifter which means you were a blend race of titans, AKA the fire titan and Reiner was assigned by the higher ups to take care of you and teach you how to master your titan abilities, he was at the meeting where they talked about the rules of taking care of you, they finally took him to show him to you, his eye's softened a little....he gently sighed before crossing his arms and smirking

Reiner: So this is the little squirt...hmph smiles