I meant that it was rumoured someone was going to be a full-fledged soloist.
That's even better! Now we can expect another soloist who is not Koharu!
Koharu solo debut is only this: she's debuting in a song she sings solo.
So far, it's not planned to put her on a full soloist schedule.
Now, imagine that people likes it! And, you know that anime series change its OP and ED very frequently, lol. It's so great to do an anime about an idol boy group starring a girl who wants to become and idol girl just to be with the idol boy. News and Momusu fans reunited lol