This stage play is focused on Nekoma as the main team as they face off against Fukurōdani Academy and Nohebi Academy in the Tokyo qualifiers for the Spring Interhigh.
The story of Mairimashita! Iruma-kun follows Iruma, a kind-hearted 14-year-old boy whose parents sell him to demons for their own selfish interests. However, the demon he is sold to has no grandson of his own, so he dotes on Iruma and sends him to demon school.
In this musical adaptation of the anime, Kawagoe Boys Sing, an eccentric ex-conductor helps a unique group of high school students form a boys choir, where they learn to express themselves and overcome their fears.
