After the ceremony ended, the children on the playground followed the class assignment list and orderly made their way to their respective classrooms.
Toji did not leave immediately. Instead, he followed Chiri to the office, used the Telescope Technique, and peered through a crystal ball to observe the classroom where Tsunade and the others were.
The Telescope Technique had originally been a ninjutsu developed by Hiruzen Sarutobi.
Previously, Toji had mentioned to Tobirama that he was overwhelmed with official duties and had no time to accompany or witness Orochimaru's growth. He worried that Orochimaru would be bullied at the Ninja Academy. He hoped there could be a secret technique that would let him observe a child's movements and growth at any time.
Tobirama thought Toji was being overly protective of the child, but he did not say much. He agreed on the spot, took a few days, and developed the Telescope Technique ahead of schedule.
Its core function was to use a crystal ball as a medium for long-distance target surveillance, transmitting sound and images in real time. Its limitation was that a formation had to be set up in advance at the surveillance location, so it could not be used on the battlefield.
Its surveillance precision could reach the level of observing individual actions, but it required the user to possess precise chakra control.
Furthermore, if the surveilled target was a sensory-type ninja with considerable sensitivity to chakra, they could detect that they were being watched.
It was essentially the Shinobi World's version of surveillance cameras.
After the Telescope Technique was developed, even Tobirama found himself hooked. He made three crystal balls in total. One was given to Toji, while the other two were placed in the Hokage Office and the Senju Compound respectively.
Toji shared the surveillance footage