Zoe

Yeah, this producer comment says the original work was named after the song: ハロープロジェクト様の名曲をリスペクトして名付けた本作品がドラマ化!?

^ The drama itself was inspired by C/C.

Masaki has always been all about inheriting Reina's lines, so that's what I'm expecting here. 

Nice! Better than nothing. Do they have at least a digitally release?

Yes, on 2/29

idk, I thought it was obvious she was going solo after she covered some songs solo lol
I can't wait for proper original songs for her!

It's not a guarantee. Tanaka Reina hasn't had any releases at all even though she has solo songs officially registered with JASRAC.

And she was originally planning to leave the entertainment industry until Tsunku pushed the band, and she wasn't even at their final show. I don't think she's a good indicator of anything tbh.

All of her new solo stuff came after the band when she started doing the typical M-Line style activities.