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.
Until he located his father, 
he was strong as an ogre.
Cuando perseguía a su padre 
era fuerte como un demonio.
Mientras estuvo persiguiendo a su 
padre, Koikawa-dono era un demonio.
Até ele ter encontrado o pai dele, 
ele era forte como um ogro.