hirai yukio, original, archived source, bad link, 1girl, back, broken glass, brown hair, chalkboard, classroom, diving helmet, fins, fish, fish tail, full body, glass, gloves, half updo, hallway, helmet, indoors, median furrow, mermaid, mermaid costume, monster girl, ocean, orange gloves, orange helmet, ponytail, profile, shoulder blades, solo, starfish, tail, transom window, two-tone helmet, underwater, window, yellow gloves, yellow helmet