Ningyo Hime
Izumi was chosen to play the prince in the play "The Little Mermaid" for the school festival because of her handsome looks, but she is not good at acting. She gets acting help from Miyaji, an inconspicuous girl in the same class, and gradually becomes attracted to her. This is the debut work by up-and-coming newcomer Hakuso Mita.
(Source: Heroes Web, translated)