1girl, alternate_costume, bikini, breasts, brown_eyes, bubble, cleavage, fire_emblem, fire_emblem_awakening, fire_emblem_heroes, fish, holding_breath, long_hair, medium_breasts, niko_(aiai03012), official_alternate_costume, purple_bikini, robin_(female)_(fire_emblem), robin_(female)_(summer)_(fire_emblem), robin_(fire_emblem), solo, submerged, sunlight, swimming, swimsuit, twintails, underwater, water, white_hair