koikishi purely kiss, fujimori yuu, fujimori kaname, yuuki hagure, wallpaper, game cg, 16:9 aspect ratio, 1boy, 1girl, bare shoulders, blush, brother and sister, clavicle, flat gaze, hairband, innertube, long hair, looking up, one-piece swimsuit, open mouth, purple eyes, purple hair, siblings, sitting, sitting on lap, sitting on person, sukumizu, sweatdrop, swimming trunks, swimsuit, thigh gap, thighs, viewed from above, violet eyes, water, white sukumizu, white swimsuit