The Miyoshi brothers have powerful regenerative capabilities.  They say that taking life is offering salvation, and in them Shungiku sees his own younger self.  Oooka, who knows the old Shungiku, is doubtful he can win the battle.
Take back what you said about 
Koikawa-dono being weaker.
¡Retire lo que dijo de que 
Koikawa-dono es ahora más débil!
¡Retire lo que ha dicho de que 
Koikawa-dono es más débil ahora!
Retire aquilo que você disse sobre
 o Koikawa-dono estar mais fraco.