Kiichi&#039;s father, master of the Nadashinkage-Ryu. He has a calm personality, yet will put up a good fight whenever one occurs. A long time ago, before Kiichi was born, Seiko was one of the best fighters in the world. His retirement match against Iron Kiba is still talked about to this day. Hopefully his son will become as good as him.

This is a continuation of Koko Tekken-den Tough which ran for 42 volumes and followed the main character, Kiichi, when he was younger and was training under his father Seiko Miyazawa. This is a mixed martial arts fighter manga about the Miyazawa school of martial arts. Initially, it is about Kiichi trying to heal his father after he was nearly killed by his brother Kiryu but it then goes on to be less about that as his father recovers and some tournament style fighting begins.

Nobody enjoys a good fight more than "Kiibo" Miyazawa, a high school student whose father is training him in the family's secret martial art. Kiibo dreams of becoming the next Bruce Lee, but his awesome fighting skills may soon surpass his idol's!

A series dedicated to the father of Kiichi from the series Tough.<br><br>
This is a side story of the Tough series based around Miyazawa Seiko (Kiichi's father) and his brother Kiryu. Much of the same elements of Tough can be found here such as Mixed Martial Arts Fighting and alot of Violence.

Years ago there was an underground match between Pro Wrestling and Nanshin Shadow Style (a secret and deadly form of martial arts) to see which form of martial arts was dominant, The Nanshin Shadow style came out victorious in the battle. Now in the present, the man who was defending Pro-Wrestling is back and is out to destroy Nanshin Shadow style in any way he can; however, it is now up to Kiichi, the son of the previous victor to defend the name of Nanshin Shadow style and it is his job to keep it from being completely erased from existance.
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(Source: Anime News Network)

[Wiki](https://ja.wikipedia.org/wiki/%E8%88%B9%E6%9C%A8%E8%AA%A0%E5%8B%9D)

He is a professional wrestler, mixed martial artist, actor and a Youtuber. 

Special chapter of Tough Gaiden: Oton made to celebrate the 10th anniversary of the Grand Jump magazine.
