A full body shot from a slight high angle captures an 18-year-old human girl with pygmy hippopotamus features sitting on a riverbank. She has a grumpy, sulky expression with narrowed eyes and a firm mouth, her head tilted downward. She has long cool-gray hair with orange-pink inner layers, gathered into a voluminous chignon with a pale blue scrunchie, and small round furry hippo ears on her head. She wears a fully buttoned cool-gray school blazer over a light-colored shirt with a pale blue collar, and a long, structured cool-gray trench-style skirt with orange-pink accents, the hem slightly damp. She is barefoot, with one foot resting on a flat rock and the other dipping toes into clear water, creating subtle ripples; her removed school shoes and a large, industrial gray box-shaped backpack sit beside her on the pebbles. The setting is a peaceful Japanese riverbank with smooth gray stones and soft late afternoon golden light. The atmosphere is nostalgic and wistful, featuring a sophisticated palette of cool gray, orange-pink, and pale blue with clean, sharp line art and polished anime rendering.