The song "United Force (TV size)" from the TV animation Gigantic Formula Original Sound Track Vol.1. Composed and sung by Minami Kuribayashi. Arranged by Masaaki Iizuka. Playlist: https://www.youtube.com/playlist?list=PLgBAXaMeVtyoifBhAGo4gJ4UfNebFtvnu Buy the soundtrack here: https://www.amazon.com/dp/B000UAL9LY/