|“||The blade is for carving one's heart, not for turning against the masses.||”|
Ouga Uzuki was the grandfather of Jin and Shion Uzuki. He was the sensei of Jin and Margulis, and trained them in the art of swordsmanship. It is also possible he may have trained Shion and Pellegri. During these times, Ouga favored Jin over Margulis, and Margulis viewed Ouga as an old fool. Ouga also had loads of books in his storage, and Jin and Shion had read them when they were younger.
Ouga once told Shion that everything in this universe existed for a reason, and that's why life is allowed to exist.