Son of World's Will
"The World's Will?" Saraya's face showed confusion; she didn't understand what Rika was saying.
However, Vuni and Tsuraguki were different; they clearly understood what Rika was saying. Information about this world as well as about other players was inserted into their memories by the system when they were summoned to this place by Hikaru.
As for the information about the world's will, Vuni and Tsuraguki both knew about it. After all, they were both powerful beings in the past. Although Vuni's past remained a mystery, in the past Tsuraguki used to travel the vast universe.
which signified that she had escaped from her world and was freed from the control of the so-called Will of the World.