Child Error

Child errors are orphan children who for various reasons were abandoned by their parents in academy city.(aka, parents sent them there and disapeared.) Academy City seems to only be concered that the now 'missing' parents/guardians are no longer paying tuition.

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Child errors sometimes end up as part of various experiments in Academy City.

Child errors are seen in the Toaru Kagaku no Railgun series.

Edasaki Banri is an example of a child error