I've never written Rin Okumura before, so please forgive me for bad stuff. ^^' And, to be honest, I never actually watched/read the first episode/chapter before (I missed it on Adult Swim), so... yyyyeah... ._.
I also do not own Blue Exorcist. If I did, it would focus more on the Demon Kings and Rin meeting them and Satan actually being nice 'n stuff.
Introduction
Rin Okumura used to live an ordinary life in a monastery with his little twin brother Yukio. He used to believe that he was a normal boy with normal morals. He had normal goals; to be like his father, Shiro Fujimoto, and to protect Yukio whenever he needed to. He loved his family-the priests loved him, he loved his home, and he was glad to be able to live in such a kind place.
Then came the day when he was introduced to the world of Exorcists.
It happened at a convenience store, of all places. Ironically the place where he worked. Where others saw a monkey, he saw an odd-looking creature with odd arms and a wide face with a pointed tail shaped oddly like an arrow. He would later know it to be a goblin, and Rin chased it around the entire store trying to get the scarf from its hands. It was nimble, like a monkey, but it wasn't one. Eventually he caught it and got the scarf away from it, but by the time that was done, the store was ruined, and he was fired on his first day on the job.
Later on that same day, he saw odd-looking creatures floating in the air outside, ones that nobody else around him could see. In the distance, they looked like pieces of coal flitting down to the ground, but up close they looked like tiny little monsters. And they were.
Even though he was rudely introduced to Satan, his biological father, that night, and experienced the death of his proclaimed dad, he considered these two occurrences to be his introduction to the world of Exorcists.