"How far below the surface is the tunnel?"
Minato Namikaze continued his questioning.
"Twenty kilometers. With the Underground Rock Rat Ninja Beast Clan unique to Iwagakure, we don't have to worry about cave-ins."
"Twenty kilometers!!! Over twenty thousand meters... At that depth, aside from Kushina's Mind's Eye of the Kagura and the Byakugan bloodline ability developed to its limit... no other Sensory Ninjutsu could possibly gather any intelligence..."
As one piece of crucial intelligence after another was revealed in full, a trace of coldness flashed through Minato Namikaze's eyes.
Even the Sensory Ninjutsu he possessed could only detect chakra signatures within a dozen or so kilometers, yet the tunnel Iwagakure had built...
"You two, we may need to change our mission. This tunnel must be destroyed, and... we'll have to reveal ourselves as well."
Minato Namikaze raised his hand and sealed the Iwagakure Jonin again, then spoke in a grave voice.
"You mean to let Iwagakure know we're still behind their lines after destroying the tunnel, so they won't keep digging tunnels?
"Or do you want to slow Iwagakure's progress by acting as a hidden deterrent? Minato, that's very risky. Although Iwagakure doesn't have a Kekkei Genkai like the Byakugan, they do have detection-type Kekkei Genkai. The Flying Thunder God Technique isn't absolutely safe."
Having carried out many missions with Minato, Shibi Aburame immediately understood what he meant and responded quietly.
"No. Actually, after we destroy Iwagakure's tunnel, they'll most likely give up on digging any further. After all, once I pass the information to Master Jiraiya, he'll certainly take precautions in advance, making the tactic of continuing to dig tunnels useless.
"But Iwagakure will certainly attack Konoha on the main battlefield. By deliberately revealing ourselves, we can tie down some of Iwagakure's forces and ease the pressure on the