[内臓研究所 (優しい内臓)] ダウナー研究者お姉さんと助手のHを覗き見してしまった話。 [英訳] , [Naizou Kenkyuujyo (Yasashii Naizou)] Downer Kenkyuusha Onee-san to Joshu no H o Nozokimi Shiteshimatta Hanashi. | I Accidentally Witnessed The Languid Research Lady Having Relations With Her Assistant. [English] [Unwisest TL]