Moreover, with the Kanji for eight {八, hachi), resembling a folded fan spreading out, and the symbol for infinity, ∞, being similar to the number 8 turned on its side, the message conveyed in the title is that "an infinite amount of happiness is spreading out in the eighth world of Misia".

[2] With her previous album, Ascension, focusing on the vast theme of "life" and "birth", Misia began production of Eighth World with the idea of incorporating this element in a more tangible way.

The album has a more personal theme, with lyrics about relationships and the many scenarios she encountered in her homeland as well as in Kenya, where she visited the Kibera slum in Nairobi.

[3] In an interview with MSN Music, she explained, "Last spring, I visited Kenya and the reality of their conditions I saw in the slums was harsher than I had imagined.

The song "Ishin Denshin", which was written by the essayist Mayumi Satō at Misia's request, speaks of this realization.