|Nickname:||Fourth, Joker, Magness|
He follows the Hammurabi code variation of "an eye for an eye, a tooth for a tooth and the hammer of justice for the wicked".
Originally, of the two siblings, only the older sister Nenene inherited the magnetism power from their father, Prime Minister Fujiwara. Toki was thus undervalued and attempted to run away from hom, until Nenene transferred half of her power (and accordingly, half of her life) to Toki to make him equally special. Later, she died protecting him from the Re:Code 03, Kouji, and under mysterious circumstances the current living Nenene no longer remembers him. Still Toki vows to protect Nenene with his life, as well as to get her revenge on Kouji.
It's later revealed that Toki is not his real name, but rather a name he adopted when he became a Code:Breaker.