Gishaku

Gishaku (ギシャク) appears in the one-shot manga Right on King. He is the former Nanto Koshū Ken successor and Shin's biological father. To establish Nanto Koshū Ken as the ultimate style he challenged Ougai to a fight, only to lose his right arm in the blink of an eye. Blaming his defeat on the love for his pregnant wife, he imposed a harsh discipline on his young son to remove any such weakness. He hoped this would empower Shin to surpass Ougai's own student. When he caught Shin bonding with Kenshiro, he punished him by burning the photo of Shin's mother that his son had been hiding.

Gishaku
Gishaku, as he appears in Right on King'
Name in Kanji	ギシャク
Name in Romaji	Gishaku
Fighting Style	Nanto Koshū Ken
Family	Shin (son) Unnamed wife
Position(s)	Shin's sifu and father
Appearances	Right on King