The character Seiyô Uchino, played by Ryôma Sakamoto was a disastrous cast. If the whole drama series without his involvement, it could be a great one. But sadly, with his constant overacting like a clown, sometimes even more like a jerk, the viewing had become almost a torture. Every scene with his presence, the exaggeration of his facial expressions, his unnatural body movements, his hands gestures, the delivery of his overblown dialog, suddenly, this supposed to be sincere and touching drama, would become a farce-like practical joke! I don't know how the director or the screen writer(s) would have allowed or even encouraged him to play such important role. Seiyô Uchino is suppose to be a very serious ronin samurai, what Ryôma Sakamoto performed only degraded him as a half-crazy unstable jerk. All the characters in this drama looked normal and acted normally. It supposed to be a quite serious time-traveling sci-fi drama, mixed with Japan's historical background and historical figures, but allowing this Ryôma Sakamoto to freely exaggerated as he liked, this drama series has become an almost unbearable viewing experience. I have to fast forward whenever this jerk-like clown appeared, even it's critically important.