Junjou Serenade

 (純情セレナーデ) is an idol group formed in July 2018 based out of the HB Café idol café in Okayama.

They are inactive as of July 2022 due to the members being transferred to other TREASURE PROJECT groups.

Final Line-up

 * Arisawa Himeka (有澤ひめか) (Joined March 2021)
 * Masuda Sana (増田紗南) (Joined August 2021)
 * Yamashina Mana (山科まな) (Joined June 2020)
 * Hiiragi Amane (柊雨寧) (Joined March 2021)
 * Kuon Nazuna (久遠なずな) (Joined August 2021)

Former Members

 * Minami Kokoro (南こころ) (Founding member, graduated January 2019)
 * Azumi Itsuki (阿澄いつき) (Founding member, graduated February 2019)
 * Usami Yume (宇佐見ゆめ) (Founding member, graduated March 2019)
 * Nishino Yuzuki (西野ゆずき) (Founding member, graduated July 2019)
 * Naruse Chisaki (成瀬千咲)
 * Sasahara Shiori (笹原志織)
 * Watamura Waka (綿村和佳)
 * Tsujimoto Ai (辻本愛)
 * Yuiki Chihaya (唯木ちはや) (Joined unknown,, graduated August 2019)
 * Fujita Amina (藤田あみな) (Joined October 2018, graduated unknown)
 * Sakura Tomoe (佐倉ともえ) (Joined October 2018, graduated unknown)
 * Nagayama Kano (永山かの)
 * Hiranaga Rina (平永莉愛) (Founding member, graduated February 2020)
 * Kurosaki Chino (黒咲ちの)
 * Ishitobi Makoto (石飛まこと) (Joined June 2020, graduated unknown)
 * Horikawa Yua (堀川優愛) (Joined October 2020, graduated unknown)
 * Hirano Kokoa (平野ここあ) (Joined June 2020, graduated March 2021)
 * Aikawa Iroha (相川いろは) (Joined October 2020, graduated April 2021)
 * Amae Tsumugi (天江紬) (Joined June 2020, graduated June 2021)
 * Asahina Urara (朝日奈うらら) (Joined October 2020, graduated November 2021)
 * Kuramochi Mayoi (倉持まよい) (Joined June 2020, graduated December 2021)
 * Akiha Mimi (秋葉みみ) (Joined June 2020, graduated December 2021)
 * Shizuki Reika (志月麗華) (Joined March 2021, graduated January 2022)
 * Nagi Rinka (凪梨夏) (Joined October 2020, graduated February 2022)
 * Sano Momona (佐野ももな) (Joined October 2020, graduated March 2022)
 * Enomiya Ayana (江ノ宮あやな) (Joined October 2021, graduated March 2022)