Once there was a boy living in a city in Japan, named Shimizu Kyo. Kyo is from a family of good income, both of his parents own a business of their own, but he doesn't really understand what they do. When he was still really small, his family was very loving towards him. But now, the only one who is nice to him and he can trust wholeheartedly is his twin sister, Shimizu Clara.
It is weird, isn't it? A small boy who is only 7 years old, trusts his sister only? It is because Shimizu Kyo has become a mute at 4 years old. This is because there were a few adults who scared him. They traumatized him, by almost kidnapping him! But this isn't what made him mute, it is what happened after their attempt. The kidnappers shot eachother infront of him! This has scarred him for life, and it can't be undone. Is his world going to be like this forever?
Tonight again, he cried himself to sleep, without anyone knowing.