One of the saddest parts of Tokyo Ghoul is that most of these kids are just that - kids. Kaneki was 19 years old when his fate was sealed, and worse than that, he had almost no adult figure in his life to look up to when he lost his mother far too young. Juuzou was a kid when he was forced to endure torture unimaginable. Touka and Ayato were TINY when their parents were ripped away from them. Nishiki was raised by his sister and even she was ripped from him. Akira lost her mother and her father. Hinami lost her mother and we father similarly. Amon was raised by a man e completely trusted and respected until he found out that man was pure evil. Seido was bright and young until his life became a tragedy. This entire series is children forced to grow up and face the world and bear a burden that no one should be dealt.