1girl, d, arknights, bad_pixiv_id, bikini, black_choker, black_footwear, breasts, choker, full_body, hair_ornament, hand_on_own_hip, hand_up, high_heels, horns, long_hair, looking_at_viewer, mona_(wyxp3245), navel, official_alternate_costume, open_mouth, purple_eyes, red_hair, simple_background, smile, solo, standing, star_(symbol), star_hair_ornament, stomach, surtr_(arknights), surtr_(colorful_wonderland)_(arknights), swimsuit, thigh_strap, thighs, very_long_hair, white_background