Thread:Riyu-Hime/@comment-25026534-20151026161644/@comment-25524734-20151027074259

Trust me, I've learnt Japanese, and it is "Wo", not "O".

オ = O

ヲ = Wo

You can see it on their website, http://iris.dive2ent.com/discography/detail.php?id=1008905 and see what "letter" they used.

I know when you translate it, it doesn't sounds right, but I think it's best if we follow their website.