1boy, 1girl, armlet, armor, bare_shoulders, black_panties, blonde_hair, blue_eyes, blue_headwear, blush, bracer, breasts, brother_and_sister, castor_(fate), closed_mouth, collar, diadem, fate/grand_order, fate_(series), gloves, glowing_armor, gold_armor, gold_gloves, gold_trim, hair_ribbon, head_wreath, looking_at_viewer, multicolored_clothes, open_mouth, panties, pollux_(fate), ribbon, short_hair, short_sleeves, siblings, small_breasts, teeth, thighs, underwear, white_background, white_ribbon