3B junior

3B junior was a research student idol group under Stardust Promotion. The group was formed in November 2014 with the same name as 3B junior, Stardust's under-18 idol training department. The new unit disbanded in November 2018.

Final Lineup

 * Aira (愛来)
 * Ichikawa Yuzuki (市川優月)
 * Uran (うらん)
 * Ohira Hikaru (大平ひかる)
 * Okuzawa Reina (奥澤レイナ)
 * Odagaki Hina (小田垣陽菜)
 * Kurimoto Yuzuki (栗本柚希)
 * Kojima Hana (小島はな)
 * Saito Karin (斎藤夏鈴)
 * Suzuki Moeka (鈴木萌花)
 * Nakahara Sakuya (中原咲耶)
 * Nakamura Yuu (中村優)
 * Nagayama Maari (永山真愛)
 * Hazuki Tomoko (葉月智子)

Former Members

 * Amemiya Kanon (雨宮かのん)
 * Kimino Maika (公野舞華)
 * Tsukamoto Sora (塚本颯来)
 * Hanayama Shiho (華山志歩)
 * Harima Reina (播磨怜奈)
 * Mifuu (澪風)
 * Miyamae Reo (宮前怜央)
 * Mori Aoba (森青葉)
 * Uchiyama Ami (内山あみ)
 * Shiina Ruka (椎名るか)
 * Takai Chiho (高井千帆)
 * Naito Runa (内藤るな)
 * Hirase Misato (平瀬美里)

Sub-Units

 * Okuzawamura
 * Rock A Japonica (Promoted)
 * Hachimitsu Rocket (Promoted)
 * Majestic Seven
 * Leaf Citron
 * Saku-chan to Jiiji

Albums

 * [2016.09.07] 3B junior First Album 2016 (3B junior ファースト・アルバム 2016)

Singles

 * [2015.08.14] Fragile Stars / Yuuki no Silhouette (Fragile Stars/勇気のシルエット)
 * [2016.04.16] STARDUST FANTASIA / Hitotsu Yoroshiku Douzo (STARDUST FANTASIA/ひとつよろしくどうぞ)
 * [2018.10.06] Makezugirai / Battle Royale / Sneaker's Delight (まけずぎらい/バトルロイヤル/Sneaker’s Delight)