Allan was one of the earliest commercial publications in Japan to focus on male-male romance for a female audience, and was centered on the concept of tanbi (lit. 'aestheticism').

It launched at a time when June, the first commercial male-male romance magazine for a female audience in Japan (and which was also centered on the concept of tanbi), had temporarily ceased publication.

[8] The magazine also published interviews with public figures, including Yū Aku, Akihiro Miwa and Mitsuhiko Kuze [ja],[11] and special features on topics such as kabuki and Shinjuku Ni-chōme.

[8] The Ni-chōme feature, for example, contained the results of a survey conducted at a bar owned by Ito Bungaku, editor of the gay men's magazine Barazoku.

[12] Artist Akemi Matsuzaki contributed illustrations, posters, and covers to Allan, and serialized her manga series Bokura wa Seinen Tanteidan from the first until the final issue of the magazine.