BESTIEM

 was an idol duo made up of two former members of Idoling!!!.

They were formed in 2015 as an unofficial Idoling!!! sub-unit under the name W・Mayu, and became their own separate group with Idoling!!!'s disbandment in 2017.

The group disbanded on September 22, 2019.

Members

 * Sekiya Mayu (関谷真由)
 * Furuhashi Mayu (古橋舞悠)

Albums

 * [2017.08.02] BESTIEM

Cover Albums

 * [2018.12.26] BEST TIME cover

Singles

 * [2018.01.24] TENOHIRA
 * [2018.05.23] Hanky Panky Funky Punky! feat. MIRI