Shūji to Akira

Shūji to Akira (修二と彰) was a special temporary unit formed by KAT-TUN member Kazuya Kamenashi and NEWS member Tomohisa Yamashita for their 2005 drama Nobuta o Produce. Shūji (修二) and Akira (彰) are the names of the characters Kamenashi and Yamashita play in the drama respectively. Although the drama has long finished on television, the duo have revived their performance of their song "Seishun Amigo" (青春アミーゴ) numerous times. In 2017, they formed another special temporary unit, Kame to Yamapi (亀と山P), for their 2017 drama Boku, Unmei no Hito desu.

Single information
The limited edition consists of three songs and a special 12-page photo booklet, and the regular edition consists three songs and their instrumentals. "Seishun Amigo" was used as the theme song for the drama Nobuta wo Produce starring Kamenashi, Yamashita and Maki Horikita. Musically, the song has a resemblance to Japanese kayōkyoku music of the 1980s.

Chart information
The unit's sole single "Seishun Amigo" was released on November 2, 2005, and debuted at number one on the Oricon singles weekly chart, selling 520,419 copies. It maintained its number one spot the following week, selling another 250,108 copies. The single sold more than a million copies in less than four weeks and spent a total of sixty-five weeks on the Oricon charts. The single was the best-selling single of 2005 and the third best-selling single of 2006.

In 2010, Seishun Amigo was reported by the Oricon's magazine, OriStar, for having sold over 1,627,000 copies and was later certified Million by RIAJ denoting over 1,000,000 shipments.

Charts and certifications
Charts

Sales and certifications

Performances

 * 2005.10.23 Utawara Hot Hit 10
 * 2005.10.27 Utaban
 * 2005.10.28 Music Station
 * 2005.10.31 Hey! Hey! Hey! Music Champ
 * 2005.11.04 Music Fighter
 * 2005.11.04 Music Station
 * 2005.11.11 Music Station
 * 2005.11.20 Utawara Hot Top 10
 * 2005.11.30 Best Artist (ベストアーティスト)
 * 2005.12.23 Music Station Super Live 2005
 * 2005.12.31 Johnny's Countdown Live
 * 2006.03.18 Song of Japan Voted by Families (家族で選ぶにっぽんの歌)
 * 2006.08.26 24-Hour Television (24時間テレビ)
 * 2007.12.31 Johnny's Countdown Live
 * 2008.12.31 Johnny's Countdown Live
 * 2009.08.31 24-Hour Television
 * 2009.12.15 Best Artist
 * 2009.12.31 Johnny's Countdown Live
 * 2015.12.31 Johnny's Countdown Live
 * 2017.07.01 The Music Day
 * 2017.12.06 2017 FNS Music Festival

Single information
Limited edition 1 consists of one song and its music video and making-of and a special 8-panel lyrics card, limited edition 2 consists of four songs and three instrumentals and a 24-page lyrics booklet, and the regular edition consists of three songs and their instrumentals. "Senaka goshi no Chance" was used as the theme song for the drama Boku, Unmei no Hito desu starring Kamenashi, Yamashita, and Fumino Kimura.

Chart information
The single debuted at number one on the Oricon singles weekly chart, selling 175,269 copies. The single spent a total of twenty-three weeks on the Oricon charts. "Senaka goshi no Chance" debuted at number sixty on the Billboard Japan Hot 100 chart on May 8, 2017. It rose to number forty-one on May 22 and peaked at number one the following week. The song charted for eleven weeks on the Hot 100 chart. The single also topped the Billboard Japan top singles sales chart, selling 188,231 copies in its first week.

The single was certified Gold by RIAJ in May 2017.

Performances

 * 2017.05.13 Count Down TV
 * 2017.05.16 Utacon
 * 2017.05.19 Music Station
 * 2017.05.19 Buzz Rhythm
 * 2017.05.26 Music Station
 * 2017.07.01 The Music Day
 * 2017.11.28 Best Artist 2017
 * 2017.12.06 2017 FNS Music Festival