人魚捜索中深海で溺れるも、人間らしき顔の柄が頭部にある性別不明クリオネ人の群れの一人に気まぐれに助けられ、謎の生物と交流を深めたい(長タイトル)

While drowning in the deep sea during a mermaid hunt, they were saved on a whim by a flock of androgynous Clione people with human-like facial markings on their heads, leading to a desire to deepen the cultural exchange with these mysterious creatures (Long title)