1girl, solo, 15years old, looking at viewer, monster girl, mermaid, sidelocks, long hair, multicolor hair, blue hair, purple hair, green eyes, hair flower, hair ornament, hibiscus, earrings, jewelry, necklace, head fins, off shoulder, bare shoulders, frills, blue bikini, holding staff, trident, armlet, large brests, cleavage, fins, fish, shell, navel, stomach, midriff, smile, open mouth, one eye closed, blush, underwater, air bubble, sunshine, ((illusion effect)),