Downer Kenkyuusha Onee-san ni Onegai shite Ecchi na Koto shite Morau Hanashi.

[Naizou Kenkyuujyo (Yasashii Naizou)] Downer Kenkyuusha Onee-san ni Onegai shite Ecchi na Koto shite Morau Hanashi.

[内臓研究所 (優しい内臓)] ダウナー研究者お姉さんにお願いしてえっちなことしてもらう話。

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