Umi Sonoda, Mermaid, Love Live

A person dressed in a blue mermaid costume, likely Umi Sonoda from Love Live, sitting on the edge of an indoor swimming pool. The individual's long, flowing hair is styled with beads and ribbons, adding to their overall appearance as a mermaid. They are wearing a blue tail with pink accents, which appears to be made of fabric or latex, giving it a shiny and realistic finish. The costume also features intricate details such as seashells and seaweed, further enhancing the underwater theme. In addition to the costume, the person is adorned with white ribbons around their waist and neck, adding a touch of elegance to their overall appearance. Overall, the image showcases the person's creativity and attention to detail in their mermaid costume, making it an impressive and visually appealing display.