katakura shinji, kutsuki futaba, kutsuki wakaba, futaba channel, green green, highres, 00s, 2girls, barefoot, beach, beach umbrella, bikini, brown hair, can, chair, cloud, day, eating, food, fruit, glasses, grey hair, hairband, happy, holding, jumping, long hair, looking at viewer, looking back, lounge chair, lying, multiple girls, on back, one-piece swimsuit, open mouth, outdoors, popsicle, purple hair, red eyes, short hair, siblings, sisters, sky, swimsuit, towel, umbrella, watermelon