What is "kanpai!"

Kanpai!, or , is a Japanese manga by Maki Murakami. Originally published by Sony Magazines, its two volumes were published in English by Tokyopop. Although Kanpai! is the title officially acknowledged by Tokyopop and used on the covers and the Tokyopop] title page (as opposed to the original title page by Murakami, which is also used), only kimi no unaji ni kanpai! is used in the book itself in all other instances.

Sony Magazines published the manga first tankōbon volume under the Birz Comics imprint in March 2001. The first volume was republished and a second volume was released by Gentosha on December 24, 2001. Tokyopop released the series on September 13 and December 13, 2005. The series was republished into a "special ban" on December 24, 2011 and follow-up, Kimi no Unaji ni Kanpai! R, was published on June 23, 2012.