Gunjou no Sekai

 (群青の世界), sometimes abbreviated to Aoseka (青セカ), is an idol group that debuted on December 23, 2018.

Current Members

 * Ichimiya Yui (一宮ゆい) (Founding Member)
 * Kudo Mika (工藤みか) (Founding Member)
 * Murasaki Yuna (村崎ゆうな) (Joined July 27, 2020)
 * Yokota Fumika (横田ふみか) (Founding Member; Graduated May 29, 2022; Rejoined May 4, 2023)
 * Machida Honoka (町田ほのか) (Joined May 4, 2023)

Former Members

 * Nagase Rimi (長瀬りみ) (Founding Member; Graduated July 3, 2020)
 * Mizuno Mayu (水野まゆ) (Joined July 27, 2020; Graduated April 15, 2023)

Digital Albums

 * 1) [2021.03.03] COLOR
 * 2) [2021.08.28] Puzzle

Mini Albums

 * 1) [2021.03.01] COLOR

Singles

 * 1) [2018.12.23] Unknown Planet (アンノウンプラネット)
 * 2) [2020.04.14] Aozora Moment (青空モーメント)

Digital Singles

 * 1) [2018.12.23] Unknown Planet (アンノウンプラネット)
 * 2) [2019.06.28] Tsuyogari na Seigi (強がりな正義)
 * 3) [2019.06.29] Mirai Silhouette (未来シルエット)
 * 4) [2019.07.01] Nonstop
 * 5) [2019.06.03] Quest
 * 6) [2019.06.03] Melodrama (メロドラマ)
 * 7) [2019.06.04] Gunjou Tamashii (群青魂)
 * 8) [2019.12.03] Coin Toss (コイントス)
 * 9) [2019.12.03] BLUE OVER
 * 10) [2019.12.03] Saishuushou no nai Story (最終章のないストーリー)
 * 11) [2019.12.19] Reiwa Anthem (令和アンセム)
 * 12) [2020.08.01] Aoi Hikari (青い光)
 * 13) [2020.08.26] Role Play (ロールプレイ)
 * 14) [2020.11.07] I Wanna Be (アイ・ワナ・ビー)
 * 15) [2020.12.16] Cinderella Emotion (シンデレラエモーション)
 * 16) [2021.04.21] Kalmia (カルミア)
 * 17) [2021.06.30] Manatsu no Helios (真夏のヘリオス)
 * 18) [2021.11.23] Bokura no Supernova (僕等のスーパーノヴァ)
 * 19) [2021.12.05] However long
 * 20) [2022.05.25] Saigomade Oshikire (最後まで推し切れ)
 * 21) [2022.08.13] RIBBON
 * 22) [2022.08.20] BEST FRIEND
 * 23) [2022.11.18] Starry Dance
 * 24) [2022.12.24] Noel ni Kimi wa (ノエルに君は)
 * 25) [2023.01.08] Stella (ステラ)
 * 26) [2023.01.14] Gomen, Suki ni Natte (ごめん、好きになって)