Two Pair Maiden (ツーペアの乙女) is a song sung by Yumemi Yumemite and Yumeko Jabami during the first challenge in their game against Kawaru Natari during Episode 5 of the second season. However, this song was trumped by Kawaru's song. It also played after Yumemi's eventual victory at the end. The performance was broadcasted to the whole school.
Currently the full song isn't available yet, so these aren't the full lyrics.
I'm two pair, A two pair maiden
We're two girls, Two girls of a kind
I'm two pair (I'm two pair)