Props to whomever can make out the tiny kana in the blue bubble on the costume set flyer. Dunno if they're worth marking this partially_translated for...

So, I opened it in a new window and zoomed 500% but I can't read Japanese. It's something to the effect of:
メロギ (some smaller letter)
マイワ (some kanji. The left part looks like イ the right part is like a backwards c about half the size of イ with a slightly curved line off the right side going to the same size as イ)
Not sure that helps but it's the best I can do.

I think it's メロディマイク付.

Yeah, that would make sense. Added a note for it.

All need her to get her heart's desire...

She's a good kid.

Breaks my heart.