art by doppel, a boy named Zenitsu from anime "Kimetsu no Yaiba" lying on his back on a bed. He is wearing a traditional Japanese outfit called a rokushaku fundoshi, which is an undergarment that leaves little to imagination. His eyes are closed in a contented expression as he enjoys sensations of his body. room around him has a warm and inviting ambiance with soft lighting filtering through what a window or screen. His pose is relaxed yet suggestive, hinting at an underlying desire.. 1boy, agatsuma zenitsu, black legwear, blush, brown eyes, closed mouth, fundoshi, japanese clothes, kimetsu no yaiba, looking away, lying, boy focus, boy underwear, nipples, on side, rokushaku fundoshi, solo, spread toes, sword, tabi, toes, triangle print, underwear, underwear only, weapon, white boy underwear