Within the world of Tsukuyomi, Uchiha Yue was the one and only true god.
Unless the fake Fourth Mizukage, Yagura, possessed spiritual energy stronger than Uchiha Yue's, breaking through Uchiha Yue's Tsukuyomi Space would be nothing but a fool's dream. In fact, let alone the fake Fourth Mizukage Yagura, there was virtually no one in the entire Shinobi World capable of breaking through Uchiha Yue's Tsukuyomi Space.
Perhaps only those with the Eternal Mangekyou Sharingan, or those immune to genjutsu, could withstand Uchiha Yue's Tsukuyomi. Otherwise, once someone entered Uchiha Yue's Tsukuyomi Space, basically no one could escape his control. After all, Uchiha Yue's spiritual energy ranked among the very best in the entire Shinobi World. Almost no one could compare to him in the depth of their spiritual energy—not even an old monster like Uchiha Madara.
Moreover, Uchiha Yue's Tsukuyomi Space was somewhat different from Uchiha Itachi's Tsukuyomi Space in the original story. Using spiritual energy in tandem with the Kurama Clan's terrifying ability to control the five senses, Uchiha Yue's Tsukuyomi Space was essentially a perfect world—a world entirely under Uchiha Yue's control. Coupled with the formidable ocular power of the Mangekyou Sharingan, even if Uchiha Itachi from the original story had competed with Uchiha Yue in genjutsu, Uchiha Itachi would likely have been the one to lose.
Therefore, the moment the fake Fourth Mizukage Yagura entered Uchiha Yue's Tsukuyomi Space, he had already lost.
Unfortunately, the fake Fourth Mizukage Yagura did not realize his situation at all. He actually began resisting within Uchiha Yue's Tsukuyomi Space!
"Uchiha Yue, if you think you can defeat me with genjutsu, you're a hundred years too early!"
"Break for me!"
Amid his silent roar, the fake Fourth Mizukage Yagura exhausted all his strength in an attempt to destroy Uchiha Yue's Tsukuyomi