Uchiha Naruto blinked his right eye. The six-pointed-star pattern of his Mangekyō Sharingan began reverting to the Three-Tomoe Sharingan before finally returning to an ink-black eye.
A rare look of weakness appeared on Uchiha Naruto's face.
He could just about bear the chakra consumption, and he could replenish it with Soldier Pills, but that single Kagutsuchi Arrow had consumed most of the ocular power in his right eye.
The Sharingan's special ocular power was very difficult to replenish.
He was now a little like Kakashi after overusing his Sharingan. Using Mangekyō Sharingan ocular techniques above his level with a Three-Tomoe Sharingan had sent a wave of intense exhaustion through every part of Uchiha Naruto's body.
"The best thing is that my eyesight hasn't deteriorated. Should I say that's what you'd expect from something produced by the system? But Mangekyō Sharingan ocular techniques put far too much strain on me as I am now. Until the skill reaches LV4, I'll have to use them sparingly and cautiously."
Uchiha Naruto chuckled, his tone complicated.
As everyone knew, the Mangekyō Sharingan was an extremely powerful and dangerous power. As its owner used it, their eyesight would steadily deteriorate until they ultimately faced the desperate prospect of blindness.
The only way out was to transplant a biological brother's Mangekyō Sharingan to obtain permanent sight.
"I can't exactly ask Uchiha Senmon to give me another younger brother. Even if he did, the kid couldn't have a Sharingan. After all, these eyes of mine didn't come from inheriting the Uchiha bloodline. I got them from the system."
Uchiha Naruto flew to the mountaintop that had been sheared flat earlier and silently looked down beneath his feet.
Bishop, a monster that originally could not have posed the slightest threat to him, had turned into quite a troublesome