"The Nine-Tails is still full of life right now. What if it suddenly lashes out at you during the sealing process? Won't you lose your life?"
Hearing this, Minato also paused. From his perspective, with Orochimaru right beside them, it was obviously impossible for the Nine-Tails to pull any tricks.
That said, if there was a safer method, why not use it?
Chapter 133