Kazuaki's life is so ordinary and dull, he just can't tell the difference between one day and another. But one night, by total accident, he witnesses a rather embarrassing situation, which unexpectedly turns his life upside down... (Source: MU)

Calling was published in English by Tokyopop under its Blu Manga imprint on June 29, 2010. It was also released in Brazilian Portuguese by NewPOP Editora in December 2015.