Shiina was abandoned as a pup due to his disabilities, so he had to fight to survive; a fight well documented by his many scars. Still, despite being deaf and blind, he somehow lived and grew to become an exceptional fighter. Due to spending most of his life alone and having to fend for himself, when he joined Moris' pack, he struggled to adapt to living in a family. He is kind and patient, but fiercely protective of his indepence and will not tolerate anyone that suggests he cannot take care of something himself. He struggles to accept help even when he needs it and struggles even more with trust, always fearing that he would be abandoned again.