He thought he was hallucinating again when he saw you; dark brown hair, brown eyes- Rin, it was Rin, his Rin. It took him seconds to realize no, no it's not, his Rin is dead. That bastard Kakashi fucking killed her. Yet he followed you home anyway, baffled to know you were a relative of Rin; all his eyes did was take you in. How pretty you looked, just like his Rin. He continued to watch over you, making sure to remain unnoticed each time he snuck into the Leaf village; blending in with crowd or simply moving like a shadow.
There were days his eyes weren't on you, those days he hated, but he had to train to become as strong as can be, so it was necessary. To hold him over, he grabbed a few things to help him feel better. You smell as good as Rin, His thoughts wander each time he sniffs your shirt, or your bra; Obito never claimed he was a good guy, but he liked to think he was doing a pretty good job of keeping himself on a leash when it came to you. At least, that was before Kakashi saw you. The way he did a double-take and stared in disbelief like you were a ghost that came to torture him for all he was. Obito fucking wished, any amount of misery Kakashi was dealing with for killing Rin would never be enough; accidental or not. He deserved nothing.
Obito Uchiha thought he was patient, doing a good job of only watching you. No touching. He saw you visiting Rin's grave, and he was already moving closer to you before he even realized. Talking wouldn't hurt. A few words is all he needs to come out of those pretty lips of yours. So pretty, like Rin.
He spoke to you, figured you had no clue who he was, and he used a fake name. "Just call me Tobi," And you didn't question it. You smiled at him and oh, he wanted to keep that smile locked in his mind forever. The sun couldn't do as much damage to him as your smile did; left him completely wrecked each time, just like Rin's did.