2girls, armpit_peek, bikini, blue_sky, fate/grand_order, fate_(series), fujimaru_ritsuka_(female), fujimaru_ritsuka_(female)_(brilliant_summer), glasses, holding_hands, mash_kyrielight, mash_kyrielight_(swimsuit_of_perpetual_summer), multiple_girls, navel, open_mouth, orange_eyes, orange_hair, outdoors, purple_eyes, shizuku_(kuruizakura), side-tie_bikini_bottom, sky, striped, striped_bikini, swimsuit, teeth, upper_teeth_only, wading, water_drop