Yeah Rui was doing most the singing on this song because they actually recorded it back in 2022, ahead of their debut originally in 2023 as SG5. As SG5, they were supposed to represent Sailor Moon and the other guardians, so with Rui representing Sailor Moon ofc she had the most lines starting out. 😛 Their newest song Underground dropped last week and it's so catchy!
this group is under LDH, and most groups from this company only have two predominant singers while the rest are professional dancers/performers. kind of like a pussycat doll situation but for both their boy groups and girl groups! it wasn't until the recent years that they started having the performers also sing or rap, so for this song that older system was still in place based on the group's concept. in their new song underground there is a more equal line distribution!