focus on male characters who engage in cross-dressing, willingly or due to circumstance; the magazine also includes articles, interviews, and reviews.

The main magazine started as a special issue of the publisher's Monthly Comic Rex, before getting spun out as a separate publication.

Manga featured in the magazines include one-shots and series, which often combine the cross-dressing conceit with themes of gay male romance and societal rules of femininity; among the serializations are Dicca Suemitsu's Reversible!

At first the magazine was primarily popular with male audiences, but it gradually also built a female following, which by late 2011 represented about a third of its readership.

began on April 24, 2010 as a special issue of publisher Ichijinsha's manga magazine Monthly Comic Rex with a focus on otokonoko,[2][3] after being teased at Comiket in December 2009.

According to Hijikata, the proposal to create the magazine went smoothly without much trouble as Ichijinsha had noticed the popularity of cross-dressing fiction.

and Sazanami Cherry in 2011, some of the manga featured in the magazine have also been published in collected tankōbon volumes; the two were chosen for being the Waai!

Because of the cross-dressing themes in the manga published in Waai!, the magazine staff took special care when designing the covers for the collected volumes, to avoid readers feeling too embarrassed to bring a copy to the checkout in the bookstore,[9] but also used cross-dressing photo models in the marketing for the volumes.

[13] Hijikata apologized for the lack of prior warning, saying that it was a sudden development, but that the collected editions of the manga run in the magazine would continue as planned, as would the production of the anime adaptation of the Waai!

[8] On June 23, 2014, Ichijinsha published the artbook Paramitta (ぱらみった), collecting Kasukabe's art pieces from the magazine.

drew a lot of attention through its focus on male-to-female cross-dressing and was a commercial success, selling well enough to prompt a second printing.