Though training as a boxer, Retsu has no intention of changing his Kenpo fighting style. Then, boxing champ Akio Mani challenges him to a sparring match.
Season 1
12 Episodes - September 30, 2021
S1-E1 The World's Strongest Senior
September 30, 2021Go to Episode
S1-E2 Mixed species' martial arts
September 30, 2021Go to Episode
S1-E3 Prison and Hell
September 30, 2021Go to Episode
S1-E4 The Second
September 30, 2021Go to Episode
S1-E5 Terrible Triplets
September 30, 2021Go to Episode
S1-E6 Man of the Sea
September 30, 2021Go to Episode
S1-E7 Hyper male and Hyper male
September 30, 2021Go to Episode
S1-E8 Gilberto Style
September 30, 2021Go to Episode
S1-E9 Decision Time
September 30, 2021Go to Episode
S1-E10 Can't you laugh?
September 30, 2021Go to Episode
S1-E11 The Prison Guard talks about it
September 30, 2021Go to Episode
S1-E12 Beyond the Brawn
September 30, 2021Go to Episode
Season 2
27 Episodes - July 26, 2023
S2-E1 New History of Mankind
July 26, 2023Go to Episode
S2-E2 Completely Surrounded
July 26, 2023Go to Episode
S2-E3 Nature Power VS Battle Power
July 26, 2023Go to Episode
S2-E4 Pickle's Tears
July 26, 2023Go to Episode
S2-E5 Just Want to See You
July 26, 2023Go to Episode
S2-E6 Beyond the Sound Barrier
July 26, 2023Go to Episode
S2-E7 Moment of the Heat
July 26, 2023Go to Episode
S2-E8 Praying Savage
July 26, 2023Go to Episode
S2-E9 Devouring Each Other
July 26, 2023Go to Episode
S2-E10 Food Reserve
July 26, 2023Go to Episode
S2-E11 The Weak Eats the Mighty
July 26, 2023Go to Episode
S2-E12 Final Form
July 26, 2023Go to Episode
S2-E13 Unwritten Rule of the Fight
July 26, 2023Go to Episode
S2-E14 Dying for Love
August 24, 2023Go to Episode
S2-E15 Feeling the Beginning
August 24, 2023Go to Episode
S2-E16 New Horizon
August 24, 2023Go to Episode
S2-E17 Legendary Promoter
August 24, 2023Go to Episode
S2-E18 Turning the Table
August 24, 2023Go to Episode
S2-E19 God of Boxing
August 24, 2023Go to Episode
S2-E20 Their Own Way
August 24, 2023Go to Episode
S2-E21 Father & Son Dining
August 24, 2023Go to Episode
S2-E22 The Biggest Father-Son Fight in History
August 24, 2023Go to Episode
S2-E23 Urban Legend
August 24, 2023Go to Episode
S2-E24 Tears Swelling
August 24, 2023Go to Episode
S2-E25 Son, Father and…
August 24, 2023Go to Episode
S2-E26 Dress
August 24, 2023Go to Episode
S2-E27 Taste of Dad
August 24, 2023Go to Episode