sep 9, 2021 - LUMINOUS

Description:

LUMINOUS (루미너스) is a four-member boy group under SE Group Entertainment. They made their debut on September 9, 2021 with their first mini album Youth.
Youth was originally scheduled to be released on September 1, but had to be postponed after Youngbin tested positive for COVID-19 on August 23.

source → https://kpop.fandom.com/wiki/LUMINOUS_(group)