Osaka☆Syunkasyuto

 (大阪☆春夏秋冬) is an idol group formed from students of the Happy Time Dance School in Osaka. They were originally formed in 2009, but restarted in their current form in May 2012.

They went on hiatus with the departures of MANA, YUNA, and RUNA on April 29, 2022. A successor group called Shinshou Osaka☆Syunkasyuto debuted on June 16, 2022.

Current Members

 * MAINA (マイナ) - Leader/Main Vocal
 * EON (エオン) – Chorus/Dance

Former Members

 * Yano Sayumi
 * NANA (ナナ) (Transferred to Avex May 2012)
 * MAYA (マヤ) (Withdrew February 2015)
 * RINA (リナ) (Graduated October 31, 2016)
 * ANNA (アンナ) – Chorus/Dance (Graduated April 25, 2021)
 * MANA (マナ) – Chorus/Dance (Graduated April 29, 2022)
 * YUNA (ユウナ) – Chorus/Dance (Graduated April 29, 2022)
 * RUNA (ルナ) – Chorus/Dance (Joined November 2014; graduated April 29, 2022)

Albums

 * 1) [2018.06.12] SSFW
 * 2) [2020.07.29] BRAVE SOULS

Best Albums

 * 1) [2015.12.22] Early Season

Live Albums

 * 1) [2015.11.24] "Hachi Hachi" Live!!

Mini Albums

 * 1) [2014.12.18] Chameleon Shoujo (カメレオン少女)
 * 2) [2019.07.31] Gachiagaru High Tension Made Yume Janai Kono Genjitsu (ガチ上がるハイテンションまで夢じゃないこの現実)

Singles

 * 1) [2014.07.29] DAWN OF MY LIFETIME
 * 2) [2015.04.15] C’mon!
 * 3) [2015.07.08] BABYCRAZY
 * 4) [2015.08.08] SHINE
 * 5) [2015.10.05] SHINE (Re-release)
 * 6) [2017.01.31] New Me
 * 7) [2017.06.20] Rainbow Color (レインボーカラー)
 * 8) [2017.10.03] Travelin' Travelin'
 * 9) [2017.12.19] SPARK!

Digital Singles

 * 1) [2020.02.16] BABYCRAZY (Re-recording ver.)
 * 2) [2020.02.16] Let you fly (Re-recording ver.)