Ryou is not a human who has super strength, he can't move faster than the speed of sound.
But he was gifted with something unique to him. He has the ability to reflex and fend off enemy attacks using the katana he is holding. No matter how fast the attack hit him, Ryou's reflexes were quick too.
And now is the proof for that statement.
Actually not only now, because when Alyosha was in the incident of the attack on the Swiss underground port at that time, Ryou had also shown his skills.
But that's not all that is owned by Ryou. Ryou also has good sword skills, as a child he was taught to be an expert in the sport of Kendo. Developing from his expertise in the sport of Kendo, Ryou has become more proficient with the sword after years of studying. Although he is not as strong as Alyosha in boxing, he is very agile.
