1girl, alternate costume, bangs, bare shoulders, blue eyes, blue hair, breast press, breast rest, breasts, byleth (female) (fire emblem), byleth (fire emblem), cleavage, fire emblem, fire emblem: three houses, halloween, halloween costume, hat, jack-o'-lantern, large breasts, looking at viewer, medium hair, nijihayashi, open mouth, parted lips, pumpkin, solo, witch hat