Main World.
Spring, Year 15 of Konoha.
The Dragon Vein chamber, deep within the Toyotomi Clan Grounds.
The low hum of surging Dragon Vein energy remained unchanging in the air, but the changes within Toyotomi Yinglang, seated cross-legged at the center of the formation, had reached a boiling point.
He had possessed the Mangekyō Sharingan for a long time. The excruciating pain brought by that bottle of "low-grade general-purpose bloodline potential stimulant" had completely shattered the Three-Tomoe barrier, granting his left eye the Eye Power [Guixu] and his right eye [Instant].
Over the years, as his Dragon Essence cultivation deepened and his body and spirit underwent constant tempering, especially through the conquests on the British Continent and the tempering of his will and broadening of his horizons brought by his plans in Shinobi World No. 1, the Eye Power of these Mangekyō eyes had been nurtured and honed to depths ordinary Mangekyō could scarcely reach.
But he could feel that a "limit" still lay ahead. The growth of his Mangekyō's Eye Power seemed to have touched an invisible "ceiling." No matter how he circulated Dragon Essence to nourish them or tempered his spiritual energy, that barrier stubbornly remained.
This was not a question of quantity, but a hurdle of "quality."
Just as water heated to a hundred degrees, without added pressure or changed conditions, would forever remain scalding boiling water rather than become higher-energy steam.
He knew what that "ceiling" was-a deeper shackle within his bloodline, belonging to the Uchiha, or rather, to the bloodline descended from Indra Ōtsutsuki.
The conventional way to break it was to transplant a blood relative's Mangekyō and merge them, achieving the "Eternal Mangekyō Sharingan" and gaining stability and further potential.
He had no brother whose eyes he could transplant. He had cut off that