1girl absurdres arm_behind_back birthday black_horns blonde_hair blush demon_girl demon_horns demon_tail dress glasses hand_gesture happy_birthday highres horns indie_virtual_youtuber long_hair ok_sign orobou pantyhose red-framed_eyewear red_eyes red_nails red_sweater semi-rimless_eyewear sweater sweater_dress tail tane_tenshi under-rim_eyewear virtual_youtuber