1boy, 1girl, ball, bare_arms, beachball, bikini, black_bikini, black_footwear, blonde_hair, blue_eyes, blue_hair, blush, breasts, brown_footwear, byleth_(female)_(fire_emblem), byleth_(female)_(summer)_(fire_emblem), byleth_(fire_emblem), choker, cocktail_glass, couple, cup, dimitri_alexandre_blaiddyd, dimitri_alexandre_blaiddyd_(summer), drinking_glass, feet_out_of_frame, fire_emblem, fire_emblem:_three_houses, fire_emblem_heroes, flower, hair_flower, hair_ornament, hamut_nl, hand_on_another's_shoulder, hetero, hibiscus, holding, holding_cup, innertube, large_breasts, looking_at_another, male_swimwear, medium_hair, muscular, muscular_male, official_alternate_costume, outdoors, palm_tree, parted_lips, pectorals, red_flower, sandals, short_hair, sitting, sitting_on_lap, sitting_on_person, swimsuit, tree, visor_cap, wristband