blackbox (blackbox9158), han sooyoung, yoo sangah, omniscient reader's viewpoint, pepsi, 2girls, back-to-back, black socks, brown eyes, brown hair, color coordination, drink, full body, hand on own head, head tilt, headphones, holding, holding drink, implied yuri, letterboxed, midriff, multiple girls, on ground, outside border, pastel colors, pink shirt, pink shoes, shirt, shoes, sitting, skirt, smile, socks, white shirt, white skirt, white socks