[1] The first press edition comes with an 84-page photo lyrics booklet and bonus DVD with the music video and making-of for the album's lead track, "Kokoro no Sora".

The first press edition comes with an 84-page photo lyrics booklet and a bonus DVD with the music video and making of for "Kokoro no Sora", while the Yoitoko limited edition comes with a 32-page lyrics booklet, a bonus track, and an original talk track "Arajapo Talk".

The lead track "Kokoro no Sora" was composed by Tomoyasu Hotei, who is based in London, with the theme "Japan seen from the outside" in mind.

Japonism includes two of the group's previously released singles: "Sakura" and "Aozora no Shita, Kimi no Tonari".

"Sakura" was used as the theme song for the drama Ouroborous,[13] starring actors Toma Ikuta and Shun Oguri.

[14] "Aozora no Shita, Kimi no Tonari" was used as the theme song for the drama Yokoso, Wagaya E,[15] which stars Arashi member Masaki Aiba.

[20] With more than 1,000,000 copies sold, "Japonism" was certified for Million by the Recording Industry Association of Japan (RIAJ).