Future children

From Kokorodatabase

Technically, future children are defined as any offspring of a character, in play, deleted or existing in the canon universe, that comes from a time period after the current setting. It is under debate whether the character has to be a child or not in existence in the current setting (see Kiki Reikaira, who was born during the run of Kokoro, which is played in realtime-- although, not being any PC's child, this character does not fit the definition in the first place).

Future children became popular during the first summer of Kokoro's run, in 2004. Shirogane Masume was retconned to become a future child, and was the first of the Shirogane children, which became the most popular class that year- to the point where applications for new ones are barred even today.

Mirror Tokyo Mew Mew, FTMM and Kingdom Chronicle are games where the cast is almost entirely made up of future children.