otori ai, yumeutsutsu re:master, game cg, non-web source, official art, 2girls, applying sunscreen, beach, bikini, bikini bottom under shorts, bikini under clothes, blue bikini, blue eyes, bottle, breasts, brown hair, closed mouth, dutch angle, floral print one-piece swimsuit, frilled one-piece swimsuit, frills, frown, grey shorts, hair ornament, hairclip, holding, holding bottle, holding sunscreen, long hair, looking at another, lying, median furrow, multiple girls, on stomach, one-piece swimsuit, open clothes, outdoors, parallel hairclips, pink one-piece swimsuit, short hair, shorts, siblings, sisters, small breasts, swimsuit, towel, transparent bag, untied bikini, yanagiya kokoro