I (Ikimonogakari album)

Consequently, Ikimono-gakari became the first mixed group in over seventeen years to achieve six consecutive number one albums on the Oricon weekly chart.

The regular edition (ESCL-4091), had for its first pressings an Ikimono card #036 and a raffle ticket for additional prizes which included a T-shirt and a hand fan.

[6] Love is a common theme throughout the album, referenced frequently in "1 2 3 ~Koi ga Hajimaru~", "Koiato", "Nannde" and "Renaishousetsu".

Whereas "1 2 3 ~Koi ga Hajimaru~", in keeping with previous singles such as "Kimagure Romantic" and "Natuzora Graffiti", describes the light-hearted and optimistic first love of a teenage girl,[7] the others describe experiences of being broken hearted from various stages of adulthood, a theme which has rarely featured in recent Ikimono-gakari singles.

[8] "Ascending to the Capital" is also a common theme throughout later tracks, in particular "Tōkyō" and "Nukumori" where the theme is used as a metaphor to describe the emotions experienced by Yoshioka and Yamashita respectively in leaving their home town in Kanagawa prefecture behind to pursue a recording contract in the Japanese music industry.