The Elder has been secretly buying expensive scrolls and hiding the cost from Miu. He is caught by Kenichi. The Elder insists the scroll is related to how Apachai came to be at Ryozanpaku Dojo and will tell Kenichi the story if he keeps the scroll a secret. In flashback the Elder and young Miu travel to a poor village. The villagers offer the Elder money to kill a pirate who has kidnapped their children as slaves and has a bodyguard, a deadly Muay Thai fighter named Apachai Hopachai...