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.
The feeling you derived from your 
katana surely became enjoyment!
¡El sentimiento que te transmitía 
tu katana se convertía en placer!
¡Y el sentimiento que te transmitía 
tu sable se convertía en placer!
O sentimento que você sentia na sua
 katana, com certeza virou diversão!