Otohime-sama of the undersea Dragon Palace is looking for her destined mate. One day, Otohime falls in love at first sight with a "kind-hearted young man" brought to her by a turtle. She says to him, "You've done it, turtle! The ideal man is clothed and breathing!" But it turns out that this handsome man, Nagisa Niu, is actually a woman. But this doesn't stop Otohime from falling in love with Nagisa. When Otohime follows her ashore, she begins her semi-cohabitation in the next room in the same apartment... This story depicts the relationship between the single-minded Otohime-sama and a prince-like college girl.

(Source: Natalie.mu, machine translated and edited)

Note: Started as two oneshots published in Asuka 7/2022 and 9/2022 issues. Full serialization started in Asuka 1/2023 issue.