User blog comment:Abcioh12/New Character リリィ/@comment-27168097-20160803075443/@comment-3487190-20160803083537

Aside from the truth, Wikipedia is editable by everyone. As a fan you should be able to determine, not just repeat what others said there.

Anyway, the official site clearly stated that she is a new playable character in the next game update, so it's fine to call her a main character.

As for the anime plot, since she's a senior character and would not go events with Yume and her friends, I think she'll end up as a supporting character and a tutor to the younge Song Class girls.