z-ton, original, bad id, bad pixiv id, 1girl, ?, black hair, black sclera, blue skin, colored sclera, colored skin, confused, fins, fish skeleton, gakuran, head fins, imagining, kneeless merfolk, merfolk, mermaid, monster girl, motion lines, mouth hold, neckerchief, personification, pleated skirt, scared, school uniform, serafuku, shark, shark girl, short hair, simple background, skirt, slit pupils, speech bubble, sweat, sweatdrop, tail, tears, thinking, thought bubble, timestamp, trembling, tuna, vore, white background, yawning, yellow eyes