Cerylia Rectris

According to my sources they had a song with all six of them called "NEETs Paradise", but these three screenshots mean that they all had solos too oh my Akatsuka-sensei???? Unless this is some Bohemian Rhapsody situation with a bunch of different genres XD

Choromatsu, Todomatsu, and Hatabou's VAs also talked about the NEETs Paradise song in the article below:

During a discussion about "NEET Paradise," sung by the sextuplets, the cast members got excited talking about each character's singing style.

When asked about their memories of the recording and their impressions of the song, Kamiya-san (Choromatsu), said, "I was instructed to sing in an annoying way," while Irino-san (Todomatsu), said, "I wasn't given any specific instructions, but it was perfect because Todomatsu could sing it just like that!" Saito-san (Hatabou), said, "I was moved to see how cute the sextuplets can be when they put their minds to it!"

- From the article they posted on twitter