Cipher is a shōjo manga series written and illustrated by Minako Narita.

It concerns the lives of former child stars twins Shiva (Jake Lang) and Cipher (Roy Lang), who mysteriously began to trade places until the two became synonymous with each other.

Most of the cast consisted of bilingual Japanese actors and a few native English speakers in Japan.

Hidekazu Nakamura Cipher is written and illustrated by Minako Narita.

The chapters were later released in 12 bound volumes by Hakusensha under the Hana to Yume Comics imprint.