Sunny Day Service (サニーデイ・サービス) is a three-piece Japanese rock band which formed in 1992.

Current members

• Keiichi Sokabe (曽我部恵一, Sokabe Keiichi) – guitars, lead vocals (1992–present)
• Takashi Tanaka (田中貴, Tanaka Takashi) – bass guitar, vocals (1992–present)
• Mikio Daikuhara (大工原幹雄, Daikuhara Mikio) – drums (2020–present)

Former members

• Norio Katayama (片山紀夫, Katayama Norio) – percussion (1992–1995)
• Kiyoshi Kodama (児玉清, Kodama Kiyoshi) – keyboards (1993-1995)
• Harushige Maruyama (丸山晴茂, Maruyama Harushige) – drums (1995-2018)

The band formed in 1992, originally made up of Keiichi, Takashi and other members. In this form, they published "Cosmo-Sports" and "Super Disco". In 1994, they released "Hoshizora no doraibu" and "Cosmic Hippie". In 1995, they released their first single "Gokigenikaga?" and made their major label debut.^[1]

Maruyama Harushige later joined the band. They released the albums "Wakamonotachi", "Tokyo", "Ai-to-warai-no-yoru" and "Sunny Day Service." In 1999, they toured Japan with The Trash Can Sinatras.^[2]

The band disbanded in 2000, but Keiichi continued to make music as a solo artist.^[3]

In 2008, the band reunited.

On July 15, 2018, it was announced that the band's drummer, Harushige Maruyama, had died in May of that year.^[4]

• 1995 - Wakamono Tachi
• 1996 - Tokyo
• 1997 - Ai to Warai no Yoru (Nights of Love and Laughter)
• 1997 - Sunny Day Service
• 1998 - 24 Ji
• 1999 - Mugen
• 2000 - Love Album
• 2010 - Honjitsuwa seitenari
• 2014 - Sunny
• 2015 - Birth of a Kiss
• 2016 - Dance to You
• 2017 - Popcorn Ballads
• 2018 - the CITY
• 2019 - the SEA
• 2020 - Iine!
• 2022 - Doki Doki

• 2001 - Extra Best
• 2001 - Complete Best

• Sunny Day Service Official Site (in Japanese)