"Your Best Friend" is the 37th single

Single (music)

In music, a single or record single is a type of release, typically a recording of fewer tracks than an LP or a CD. This can be released for sale to the public in a variety of different formats. In most cases, the single is a song that is released separately from an album, but it can still appear...

 by Japanese singer Mai Kuraki

Mai Kuraki

is a Japanese pop and R&B singer-songwriter and producer from Funabashi, Chiba. Kuraki debuted in 1999 with the single, "Love, Day After Tomorrow". In 2000, she released her debut album, Delicious Way, which debuted at number-one and sold over 2,210,000 copies in its first week...

. It was released on October 19, 2011 on the Northern Music

GIZA studio

is a Japanese record label....

 record label

Record label

In the music industry, a record label is a brand and a trademark associated with the marketing of music recordings and music videos. Most commonly, a record label is the company that manages such brands and trademarks, coordinates the production, manufacture, distribution, marketing and promotion,...

.

Information

"Your Best Friend" is the 40th ending theme for the Japanese animation series Case Closed

Case Closed

Case Closed, known as in Japan, is a Japanese detective manga series written and illustrated by Gosho Aoyama. The series is serialized in Shogakukan's Weekly Shōnen Sunday since February 2, 1994, and has been collected in 73 tankōbon volumes as of September 2011...

(20th Season). "Step by Step" is the official theme song for the Mie Prefecture

Mie Prefecture

is a prefecture of Japan which is part of the Kansai regions on Honshū island. The capital is the city of Tsu.- History :Until the Meiji Restoration, Mie prefecture was known as Ise Province and Iga Province....

-based Nemu no Sato Hotel and Resort.

Both songs were written and arranged by Kuraki and Giorgio "Giorgio 13" Cancemi from the R&B duo So' Fly. Cancemi, a Japanese-Italian, is also behind the song "Doshite Sukinandaro", a song by Cancemi's solo project Nerdhead (on Universal Music Japan label), which featured Kuraki on vocals.

Track listing

Oricon

Oricon

, established in 1999, is the holding company at the head of a Japanese corporate group that supplies statistics and information on music and the music industry in Japan. It started as , which was founded by Sōkō Koike in November 1967 and became known for its music charts. Oricon Inc...

Released	Chart	Peak	Debut sales	Sales total	Chart run
October 19, 2011	Daily Singles Chart	4 (2011/10/22)		20,239	2 weeks
	Weekly Singles Chart	6 (2011/10/31)	17,479
	Monthly Singles Chart	25 (2011/10)	20,239

Billboard Japan

Billboard (magazine)

Billboard is a weekly American magazine devoted to the music industry, and is one of the oldest trade magazines in the world. It maintains several internationally recognized music charts that track the most popular songs and albums in various categories on a weekly basis...

Release	Chart	Peak position
October 19, 2011	Billboard Japan Hot 100 Japan Hot 100 The Japan Hot 100 is a music singles chart in Japan. It is compiled by Billboard and Hanshin Contents Link ever since February 2008. The chart is updated every Wednesday at billboard-japan.com and every Thursday at billboard.com ....	10
	Billboard Japan Hot 100 Airplay	21
	Billboard Japan Hot Singles Sales	10

Recochoku

Release	Chart	Peak position
October 19, 2011	Chaku Uta Full Chart	22
	Ringback Tones Chart	66

RIAJ

Recording Industry Association of Japan

The Recording Industry Association of Japan is an industry trade group composed of Japanese corporations involved the music industry...

Release	Chart	Peak position
October 19, 2011	RIAJ Digital Track Chart RIAJ Digital Track Chart The is chart ranks the best selling digital singles in Japan, provided by the Recording Industry Association of Japan since April 2009. The chart measures cellphone downloads ....	12

JOQR 1134

Nippon Cultural Broadcasting

is a Japanese radio station in Tokyo which broadcasts to the Kanto area. It is one of the two flagship radio stations of National Radio Network and also has a relationship with JOLF and Fuji Television....

Release	Chart	Peak position
October 19, 2011	Friday Super Countdown 50	8 (2011/10/22)

Taiwan

Release	Chart	Peak position
October 28, 2011	GMusic Combo Chart	14
	GMusic Asian Pop Chart	3

Release history

Region	Date	Label	Format	Catalog number
Japan	October 19, 2011	Northern Music	CD Compact Disc The Compact Disc is an optical disc used to store digital data. It was originally developed to store and playback sound recordings exclusively, but later expanded to encompass data storage , write-once audio and data storage , rewritable media , Video Compact Discs , Super Video Compact Discs ,... , CD+DVD DualDisc DualDisc was a type of double-sided optical disc product developed by a group of record companies including EMI Music, Universal Music Group, Sony/BMG Music Entertainment, Warner Music Group, and 5.1 Entertainment Group and later under the aegis of the Recording Industry Association of America... , Musing Music download A music download is the transferral of music from an Internet-facing computer or website to a user's local computer. This term encompasses both legal downloads and downloads of copyright material without permission or payment...	VNCM-6024 (CD Only), VNCM-6023 (CD+DVD), VNCF-6024 (Musing)
Hong Kong	October 28, 2011	Forward Music	CD Compact Disc The Compact Disc is an optical disc used to store digital data. It was originally developed to store and playback sound recordings exclusively, but later expanded to encompass data storage , write-once audio and data storage , rewritable media , Video Compact Discs , Super Video Compact Discs ,...	11-20758
Taiwan
South Korea	November 1, 2011	C&L Music	CD+DVD DualDisc DualDisc was a type of double-sided optical disc product developed by a group of record companies including EMI Music, Universal Music Group, Sony/BMG Music Entertainment, Warner Music Group, and 5.1 Entertainment Group and later under the aegis of the Recording Industry Association of America...	CNLR-1123

External links

• Mai Kuraki Official Website
• Your Best Friend (CD Only) on CD Japan
• Your Best Friend (DualDisc) on CD Japan
• Your Best Friend on HMV Japan
• Your Best Friend on Oricon
  Oricon
  , established in 1999, is the holding company at the head of a Japanese corporate group that supplies statistics and information on music and the music industry in Japan. It started as , which was founded by Sōkō Koike in November 1967 and became known for its music charts. Oricon Inc...