Chapter 133: Ch.133 Secret of the Tenseigan
The key to everything was first restoring that damaged pair of Mangekyō Sharingan. As for why he didn't fuse Uchiha Fugaku's Mangekyō with the pair of Mangekyō in Karin's eye sockets, Uchiha Shinji had his reasons.
Uchiha Fugaku's Mangekyō was a backup for him.
If Sasuke couldn't obtain Itachi's Mangekyō in the future, then Fugaku's pair could serve as insurance, ensuring Sasuke could still awaken the Eternal Mangekyō Sharingan that contained the chakra of Ōtsutsuki Indra.
Thus, unless it was absolutely necessary, Shinji wouldn't easily use Uchiha Fugaku's Mangekyō.
"No rush, I'm still young. I can take my time and plan."
Shinji calmed himself down.
The power of All-Creation Power was a high-level force in the shinobi world, representing the threshold to the 'Six Paths' level. Throughout millennia, very few people in the shinobi world had ever mastered such power.
Therefore, these things couldn't be rushed. They required the right timing, circumstances, and people.
For now, Shinji's starting point was already very high, and with the path trodden by Uchiha Madara ahead as a reference, he had a clear route to follow.
Moreover, the current reincarnations of Ōtsutsuki Indra and Ōtsutsuki Ashura were right beside him.
As long as he boldly hypothesized and carefully tested, slowly feeling his way towards the power of All-Creation Power and advancing toward the Rinnegan wouldn't be an unattainable goal.