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[Naizou Kenkyuujyo (Yasashii Naizou)]
Downer Kenkyuusha Onee-san to Joshu no H o Nozokimi Shiteshimatta Hanashi.
[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。
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