1girl, ahoge, bikini, black_bikini, blush, breasts, chibi, cleavage, fate/grand_order, fate_(series), grey_hair, groin, jeanne_d'arc_alter_(fate), jeanne_d'arc_alter_(swimsuit_berserker)_(fate), long_hair, looking_at_viewer, o-ring, o-ring_bikini, poolside, rabiiandrain, sitting, soaking_feet, solo, swimsuit, twintails, v-shaped_eyebrows, very_long_hair, yellow_eyes