Of course, Sasuke's strength was hardly lacking either.
Under normal circumstances, the Three-Tomoe Sharingan indeed stood no chance against the Mangekyō Sharingan. But Uchiha Itachi had already been in poor condition, terminally ill, while Sasuke had mastered the power of the Cursed Seal. The Cursed Seal was a simplified version of Sage Mode, and with Uchiha Itachi deliberately holding back, defeating him did not seem particularly difficult.
Sasuke, when he first awakened his Mangekyō Sharingan, might not have been stronger than he had been with the Cursed Seal. By then, he could no longer use its power.
Now that the Slug Sage had said his inability to awaken the Mangekyō Sharingan directly might be a way of protecting his body, Uchiha Yi could understand that too.
He believed his eye power already rivaled that of Kagami Uchiha's Mangekyō Sharingan back then. If it continued to grow, his body might struggle to keep up.
In theory, every evolution of the Uchiha Clan's Sharingan brought an increase in strength, and their chakra reserves grew as well. This was physical growth driven by the Sharingan, but repeated enhancements over a short period were not necessarily good for the body.
Being able to use Susanoo was also a good thing for Uchiha Yi.
Although it was only the first stage of Susanoo, it was still a good start, wasn't it? His Susanoo was blue-violet, and he wondered whether Indra's chakra had influenced it. In any case, Uchiha Yi was quite pleased with the color.
After gaining the ability to use Susanoo, Uchiha Yi also felt much more mentally stable. With a thought, he dispelled Susanoo, then began actively absorbing natural energy.
"Wait, Yi, don't do anything reckless!" Seeing this, the Slug Sage tried to stop him, but soon found itself unable to say another