Based on your request, here is information related to Episode 8 of ("LiGHTs"), which appears to be the series you are looking for.
It delves into the relationship between Tiara and her sister, Eliza, who leads the idol group Ray. Download LiGX EP08 mp4
The episode focuses on forming the "LiGHTs" group, strengthening bonds through song, choreography, and costume preparation. Based on your request, here is information related