: Shima brings Isaki home to live in his bathtub. As they spend time together, their relationship evolves from a simple companionship into a deep romantic bond, forcing Shima to confront his insecurities and the difficulty of a relationship between two different species.
The OVA is the work of independent creator , who handled directing, scriptwriting, and series composition. Produced by CoMix Wave Films —the studio renowned for its work with Makoto Shinkai—the film features a signature aesthetic characterized by vibrant, saturated colors and textured backgrounds that often resemble a moving visual novel. Plot Summary Kono Danshi, Ningyo Hiroimashita.
: The central theme is Shima’s journey from isolation to self-acceptance. Isaki serves as a catalyst, helping Shima realize he is not an "unwanted child" and that he is strong enough to believe in himself. : Shima brings Isaki home to live in his bathtub