Maybe he's talking about the to_aru_kagaku_no_railgun tag which probably shouldn't be there, since Misaka_Imouto only appears in the main series, not the railgun spinoff.
piespy said: Maybe he's talking about the to_aru_kagaku_no_railgun tag which probably shouldn't be there, since Misaka_Imouto only appears in the main series, not the railgun spinoff.