BLACKSHEEP SYNDROME

 (ぶらっくしーぷしんどろーむ., formerly 放牧系-黒羊症候群), formerly known as TOKYO BLACK., is a Japanese idol boy group formed in 2018 that made their debut in January 2021.

On July 7, 2019, they changed the spelling of their pre-debut group name from roman (English) letters to hiragana (Japanese). At the start of 2021, they changed their name to TOKYO BLACK.. On April 20, 2021, it was announced that they would use the name BLACKSHEEP SYNDROME again.

They held their last live on December 9, 2021.

Final Line-up

 * Yuimaru (唯丸® / ゆいまる; ) - Vocal
 * Leon (れおん; ) - Vocal
 * Haruhi (はるひ; ) - Vocal
 * Akashi (赤司 / あかし; ) - Performer
 * Ryota (涼汰 / りょうた; ) (Joined in December, 2020)
 * Morii Akito (森井あきと; ) (Joined on April 29, 2021)

Former Members

 * Rinnosuke (りんのすけ; ) (Joined September 25, 2019, left early 2020, now member of Jikkenshitsu REM)
 * Saku (咲 / さく; ) - Performer (Graduated on November 8, 2020)

Mini-albums

 * 1) [2019.02.20] Hitomebore. (一目惚れ. )
 * 2) [2020.01.28] Antithesis (アンチテエゼ)