This is the stage play adaptation of the original SK8 the Infinity anime series.  Part 1 was performed from December 2 to December 12, 2021 at THE GALAXY THEATRE.

SK8 the Infinity - The Stage: The First Part ～Atsui yoru no hajimari～

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.