lol (エルオーエル) (pronounced El-oh-el) is a singing and dancing group under Avex Trax. They debuted on August 12, 2015, with the song "fire!". They were formed on September 2014 by Avex Trax. Their name comes from the slang word "lol" meaning to "laugh out loud", thus producing their concept of wanting to be a group that makes people smile and can impress people as well. Their song "Heartbeat" was used as the opening song for the anime "Tribe Cool Crew".