White Zetsu—Uchiha Madara had actually been using White Zetsu to monitor Nagato all along, and Uchiha Yue had only just discovered this.
There was no question that he had to be wary of a schemer like Uchiha Madara. Especially after seeing the three White Zetsu inside Nagato, Uchiha Yue felt as though everything about him had been laid bare before Uchiha Madara's eyes. He even felt that his recuperation within Akatsuki might have been part of Uchiha Madara's scheme.
Still, Uchiha Yue was curious: did Uchiha Madara truly intend for him to become the replacement for Uchiha Obito from the original storyline?
If Uchiha Madara had truly been monitoring Uchiha Yue all along, then there was no way he could have failed to notice that Uchiha Yue possessed the same eyes as him. Under such circumstances, Uchiha Yue's strength was infinitely close to Uchiha Madara's at his peak. Did Uchiha Madara really think he could control a collaborator whose strength rivaled his own?
If he could not control him, then why had Uchiha Madara been watching Uchiha Yue all this time?
Such doubts surfaced in Uchiha Yue's mind. As his brows furrowed tightly, his gaze shifted to Nagato.
Only after his gaze landed on Nagato did Uchiha Yue suddenly realize that Uchiha Madara's target of surveillance might not have been him at all. Uchiha Madara might even have abandoned his original plan of making Uchiha Yue his successor. The reason Uchiha Madara had planted White Zetsu inside Nagato to monitor him was because Nagato's Rinnegan had originally belonged to Uchiha Madara.
In the original storyline, during the time Second Pillar was with Akatsuki, Uchiha Obito had used White Zetsu to monitor Second Pillar's movements. So how could Uchiha Madara possibly allow Nagato, who possessed his Rinnegan, to develop freely? Very