1girl, beach, beach_umbrella, bikini, black_bikini, blue_eyes, blue_hair, breasts, byleth_(female)_(fire_emblem), byleth_(female)_(summer)_(fire_emblem), byleth_(fire_emblem), closed_mouth, crossed_arms, day, fire_emblem, fire_emblem:_three_houses, fire_emblem_heroes, flower, hair_flower, hair_ornament, hibiscus, large_breasts, looking_at_viewer, lying, official_alternate_costume, on_stomach, outdoors, peach11_01, short_hair, sideboob, smile, solo, string_bikini, swimsuit, tassel, twitter_username, umbrella, upper_body, wet