In late 2014, the unit Okappy consisting of Okai Chisato and Sawayaka Goro was formed. In October 2014, they participated in the Artist no Yabou ｘ Omoide Kakekko contest, run by the show NOBUNAGA, where they made and performed an original song for a chance to become the official cheer song for the "Omoide Kakekko" segment. During the November 22, 2014 broadcast of NOBUNAGA, it was announced that Okappy's song "Omoide Goal" won the contest.