Mecha High

 (メチャハイ) was an idol group formed through a webshow on NicoNico Douga in August 2012. They were originally named Aoyama☆Saint Hachamecha High School (青山☆聖ハチャメチャハイスクール), but the name had been frequently abbreviated as Mecha High from long before they officially changed their name in August 2016.

They disbanded on April 29, 2017.

In February 2020, the group announced their revival under their original name of Aoyama☆Saint Hachamecha High School. They were scheduled to start activities on April 5, 2020 with Imamura Misaki as the playing manager, and a lineup of Imamura Misaki, Mikami Eriko, Mizuhara Shiori, Narai Yume, and Sakaki Hitomi. Their debut was indefinitely postponed because of the COVID-19 pandemic, and the status of their revival is currently still unknown.

Final Line-up

 * Imamura Misaki (今村美咲) (Original member)
 * Sayama Shiho (咲山しほ) (Original member)
 * Saida Ayaka (菜田彩佳) (Original member)
 * Hoshizono Marin (星園まりん) (Joined August 2015)
 * Mikami Eriko (三上えりこ) (Joined November 2016)
 * Takanashi Ai (小鳥遊藍) (Joined November 2016)

Former Members

 * Yuuki Miho (結城美帆) (Original member, fired April 2014)
 * Miura Sena (美浦聖奈) (Original member, fired August 2014)
 * Yamada Rin (山田如凜) (Original member, graduated October 2014)
 * Shiraishi Momo (白石桃) (Joined August 2014, graduated March 2015)
 * Mochizuki Mirei (望月美怜) (Joined August 2014, graduated August 2015)
 * Sakaki Hitomi (坂木ひとみ) (Original member, graduated August 2016)
 * Narai Yume (奈良井夢) (Joined August 2014, graduated August 2016)
 * Mizuhara Shiori (水原汐莉) (Joined February 2015, graduated August 2016)

Albums

 * 1) [2013.12.21] DESTROY ALL MONSTERZ
 * 2) [2016.07.31] LOVELESS

Singles

 * 1) [2012.09.28] Hachamecha High School Days! (ハチャメチャハイスクールデイズ！)
 * 2) [2013.03.07] Meccha HIGH!! (めっちゃHIGH!!)
 * 3) [2013.08.20] Summer of Love (サマーオブラブ)
 * 4) [2014.03.11] STARTING OVER
 * 5) [2015.01.06] Mechahigh no Gyakushuu ~ BEYOND THE DARKNESS (メチャハイの逆襲〜BEYOND THE DARKNESS)
 * 6) [2015.06.24] NEVER MIND
 * 7) [2016.03.09] Mechahigh no Tenchi Souzou (メチャハイの天地創造)