penpen (penpen1942), anthrax (band), megadeth, metallica, slayer (band), bad id, bad pixiv id, 1girl, barefoot, biohazard symbol, blonde hair, breasts, cable, electric guitar, feet, female focus, flower, full body, glasses, guitar, holding, instrument, kneeling, light smile, narrow waist, nipples, nude, own hands together, pink-framed eyewear, pink background, pinup (style), simple background, small breasts, smile, snake, solo, sticker, sunflower, swept bangs, twintails, v arms