Has anyone noticed that Ritsuka sounds like Yuzuki Yukari in her cover, "Meltdown/Roshin Yuukai"?
Compare the pair:
Yuzuki Yukari: youtube.com/watch?v=8KgOPPxVdSM
Ritsuka: youtube.com/watch?v=Jj57VDJ9m1E or utaite.wikia.com/wiki/Ritsuka (the demo song).
I recommend listening till the end, before putting forward an evaluation.