After night battles, Shudo's killers are eliminated by Daishu, but Ken under Shudo's influence turns into a rapter and then is injured by Sergeant Kayama's team. Windy is dying from the effect of Happiness. Daishu returns to his rapter form to battle Shudo. Daishu says it is because only a rapter can kill his own son. Shudo is happy for his father finally turns back to a rapter. Later they jump on an aeroplane and fight above Hong Kong. Daishu's power is weakened by age, but he dives into Shudo's shadow and defeats him with the power of his shadow. Shudo takes Taki as hostage, as he knows human emotion is his father's weakness. As an act to protect Taki, Windy stabs Ken in the stomach. At the same time Ken regains human consciousness. He gives his blood to Windy so that Windy is able to overcome Happiness and rescue Taki from Shudo.