Reira looks adorable, in a kinda weird newbie way. She'll be gorgeous very soon though I'm sure. Haruka will probably stay cute for a while though.
On Reira not having been a fan - A LOT of members weren't fans when they joined/auditioned. Goto Maki had to study the members' names before meeting them for the Love Machine shoot. Maachan wasn't a fan (supposedly became a fan during the audition), Koharu wasn't a fan either, and like someone mentioned Uta wasn't a fan either and Yuriya wasn't either but she's still KSS so.
Not that it matters, but she's hardly the first one and while I can't think of the others right now I know there's been plenty more of them lol. Though tbh I think it'll work in her favor, not knowing anything when coming in means she naturally has a lot to learn but more than that A LOT of things will be completely new to her and that's one of the most adorable things about the 100% newbies imo.