In the summoning realm, there was a place called the Originless Realm, where the Lizard Clan lived.
Much like Mount Myoboku of the Toad Clan, it was a space existing independently within another dimension. Even ninjas with spatial abilities and expertise in space-time ninjutsu could not enter such places unless they had the permission of the inhabitants within.
In other words, one had to gain the recognition of the Toad Clan or the Lizard Clan to enter places like Mount Myoboku and the Originless Realm through special means.
In essence, both the Summoning Technique and the Reverse Summoning Technique were space-time ninjutsu, building a special passage between these other dimensions and the world where Ueno Kei and the others lived. Of course, many ninjas of this era did not really understand that. To them, it was probably no more than the difference between one door and another.
Ueno Kei understood it quite well. He could simply compare the world he was currently in to the solar system of his previous life, while these independent dimensions were the planets orbiting the sun.
There was nothing difficult to understand. In short, these summoning realms should all be attached to this world while retaining their independence.
At this moment, inside a cave in the Originless Realm—no, it should have been some unique sort of house—the Lizard Clan's current Great Elder, an old fellow who had lived for several centuries, sat with his eyes closed, leisurely resting in a reclining chair.
Listening to the chirping of some unknown insects outside the window, he looked utterly at ease.
Yet that peaceful expression changed in an instant. As though he had sensed something, the Great Elder's expression immediately darkened, and his white eyebrows (don't ask Ye why lizards had eyebrows; toads had them too, so don't