ushinawareta mirai wo motomete, furukawa yui, hanamiya nagisa, sasaki kaori, hasekura airi, koume keito, 16:9 aspect ratio, screen capture, eyecatch, 4girls, ahoge, armlet, ass, bikini, bikini skirt, black hair, blue eyes, blue hair, blush, bow, braid, brown hair, choker, competition swimsuit, :d, fingernails, frilled bikini, frills, from behind, green eyes, hairband, hair bow, hair ornament, holding hands, innertube, interlocked fingers, long fingernails, long hair, looking at viewer, looking back, low twintails, multiple girls, navel, one eye closed, one-piece swimsuit, open mouth, pink bikini, ponytail, red bikini, silver hair, smile, swimsuit, tied hair, twin braids, twintails, white bikini, white swimsuit, yellow eyes