Ao

Ao (蒼; Blue) is Ishii Rika's second single after leaving Hello! Project, and her last released under the record label BM.3. It was released over three years after her previous single, Kotojima. Unlike her previous release, this was marketed as her major debut single, available for sale everywhere. Songs from this single was used in the horror movie Zoku, which Ishii Rika also stars in.
==Tracklist==
#Kokoro (こころ; Heart)
#Aoi no Koro (蒼の頃; Blue Time)
#Jiro-san (次郎さん; Jiro-san)
==Single Information==
;Kokoro
*Arrangement: Kamata Masato
*Lyrics & Composition: Ishii Rika
*Recording & Mix Engineering: Hanaki Hideyuki (SOUND CREW STUDIO)
*Acoustic Piano, Programming, Sound Producer: Kamata Masato
;Ao no Koro
*Arrangement: Takahiro Yamautsuri
*Lyrics & Composition: Ishii Rika
*Mix Engineering: Takamura Masaki
*Recording & Mix Engineering, Bass: Miyamoto Masayuki (MUTANT)
*Guitar – Narikawa Masanori
*Piano – Wada Haruhiko
*Programming – Yamautsuri Takahiro
;Jiro-san
*Arrangement: Yamautsuri Takahiro
*Lyrics & Composition: Ishii Rika
*Recording & Mix Engineering: Miyamoto Masayuki (MUTANT)
*Cello: Shika Udai
*Guitar: Narikawa Masanori
*Programimng – Takahiro Yamauturi
===Credits===
*Design – Kon Tesun (JDC)
*Mastering Engineer – Aikawa Yoichi
*Executive Producer – Kawanashi Shingo
*Artist Management – Okonogi Syunichi(JDC)*
*Photographer – Inose Norico
*Release Operator – Fukuda Naoya(JDC)*
==Comments==
;Kokoro
*"I've sung this song in concert several times before, so maybe some of you remember it. There are so many people and we have all different bodies, different faces, different feelings but we all live in the same time. Please have a look at my feelings. If some of them reached yours as well, that’s the beginning of a new encounter."
;Ao no Koro
*"This song was the beginning to everything this time around: "Youthful days." This song was born when song producer Suzuki Kenji and music arranger Yamautsuri Takahiro helped me open the door to my own youthful days, which I had always been unable to do. The wounds I didn’t want for anyone to touch have been kept hidden up until when I started writing this song and put all of those feelings into it. I want you to feel and get a touch of a new side of me through this song."
;Jiro-san
*"I met him when I was just walking aimlessly around Shinjuku as per usual. We walked different roads and lived different days, but he’s very important to me and we wish for the same thing. Please meet him, Jiro, in this song."
==Trivia==
* Ishii released Chinrenka in 2015, which also was marketed as her major debut single.
==Video==
石井里佳こころPV2009|Kokoro
==External Links==
*Discography: Ishii Rika Official Web Site - mobile
*IMDb
*Official site for the movie
*Ishii RIka Diary post about the release
*Lyrics: , , 
==References==
Category:2006 Singles
Category:Indie Singles
Category:Ishii Rika Singles
Category:Solo Single