Song question

Hello!

I am looking for this older idolmaster song but I cannot remember the name.

I only remember most of the characters were in it and they were mostly talking rhythmically.

It had Yayoi Takatsuki (I think) and she kept ending her sentences with -masu and then at the end of her section she said itekimasu!

It was around the time that Go my way came out I think. Does anyone know which song I am talking about?

Thank you in advance!