Shin has always lived in the areas of the Alliance that are pretty much like normal civilians.
His father is a creator of Ninja Tools for the nations of the Alliance. His father being a making of Ninja tools practiced with them making sure they were of the best quality. His father also grew to love his work and had a deep appreciation for Ninja tools and thus learned to master them. While not an official shinobi his prowess with Ninja Tools is utterly amazing in addition to his knowledge of the Shinobi world itself. Shin naturally grew to admire his father helping him along with his work and learnning the in and outs and uses of Ninja Tool. It come natural to him. He and his father were beyond precise. They trained their eyes to notice to most minute details and get their tools to hit the mark.
Shin's mother is a doctor who practices in medical ninjustu, treating civilians and Shinobi of the alliance. Shin liking the precesion of the art learned from his mother as well. While she thought if was a geniue attempt to help people it was more about learning precision and getting a master of Chakra Control. Through the teachers of his parents and passing Shinobi, Shin learned a basics of Shinobi skills
Shin never really wanted anything out of life, but sometime he wanted to do more with his Shinobi Skills. One day he spoke with his father about moving on with his life possibly become a Shinobi. His father chuckled claiming that as long as he never lost his love and respect for Ninja Tools and the art of precision he didn't care if he sleept all day. His mother on the other hand wasn't as happy. His mother really wanted Shin to help out at the hospital becoming a doctor. She loved having him around, and truth be told he was skilled and what he did. After a night of talking and promises she eventually gave in allowing him to venture into the villages of the Alliances to make his own decesion for his life. His father walked up to Shin giving him a special scroll. He told Shin that those were special Ninja Tools he made for him and whenever he felt like using them to go ahead. And with that being said Shin walked off.