1girl, bad_pixiv_id, blue_eyes, blush, breasts, chest_harness, collar, facing_viewer, girls'_frontline, gloves, half_updo, harness, koyashaka, long_hair, looking_to_the_side, medium_hair, open_mouth, pa-15_(girls'_frontline), short_twintails, simple_background, small_breasts, smile, solo, twintails, white_background, white_hair