E:U (이유) is an idol under Yue Hua Entertainment. She is the leader of the upcoming girl group EVERGLOW.
On February 24, a teaser video was posted on Stone Music Entertainment’s channel on YouTube, revealing E:U as a member of the girl group EVERGLOW, which will debut in March 18, 2019 with the single album “Arrival of EVERGLOW”.
Source: kpop wiki