"Boss, isn't this going a little too far?"
Kakuzu hurried over to Tetsuya's side. Only then did he notice that Tetsuya's appearance had changed somewhat.
Several black and white markings had appeared on his once-fair face, and the two yellow marks at the corners of his eyes were especially striking.
He had always looked particularly sly when he smiled with his eyes narrowed. Now, in this state, Tetsuya looked even more ethereal and mysterious, like a figure who had stepped out of an ancient mural.
With his Earth Grudge Fear secret technique, Kakuzu immediately detected the energy fluctuations coming from Tetsuya, which were distinctly different from chakra.
"Boss, what's going on with you?"
"You mean this? It's called Sage Mode. It took me years of training to learn it, and this is my first time using it in an actual fight."
Tetsuya grinned. After training in senjutsu with the Yellow Immortal for so long, he could finally enter Sage Mode.
Although a long time had passed for him, the Yellow Immortals who knew about Tetsuya's training found it downright unbelievable. This was the first time they had seen anyone learn the senjutsu of the Weasel Burial Mound and successfully enter Sage Mode so quickly.
Normally, mastering it was practically impossible without eighty to a hundred years of training. Tetsuya had only taken a few decades. He was nothing short of a genius.
"But that aside, boss, didn't you just tell me not to get carried away killing and slaughter innocent people? Look at what happened after that attack of yours. Kusagakure's gone, never mind leaving anyone alive."
Kakuzu looked back at Kusagakure behind them. It had become a sea of flames, everything within it reduced to ash.
"Relax. I know what I'm doing. I can see perfectly well where there