Othello (Japanese: オセロ, Hepburn: Osero) is a shōjo manga series by Satomi Ikezawa.

The game involves a lot of switching back and forth between black and white pieces, representing Yaya and Nana's constant flip-flop.

But she has a secret: When she looks in a mirror or hits her head, Yaya's second personality, aptly named Nana, takes over her body and puts the wrong-doers in their places, shouting her catchphrase "Heavenly Punishment!"

Written and illustrated by Satomi Ikezawa, the chapters of Othello were serialized in the Japanese magazine Bessatsu Friend and collected into seven tankōbon volumes by Kodansha.

[1][2] Del Rey licensed Othello for an English-language release in North America and published the seven volumes from October 12, 2004 to February 28, 2006.