多くて申し訳ないのですが、元ネタを知りたいです。なにとぞよろしくお願い致します。

https://www.gotporn.com/jav-amateur-manami-18-makes-her-hardcore-debut-really-cute-with-tight-body-she-fucks-on-couch/video-12298752

https://www.gotporn.com/jav-amateur-asuka-18-really-cute-tight-body-uncensored-action-she-twitches-with-every-thrust/video-10379974

https://www.gotporn.com/jav-amateur-rui-short-hair-teen-with-tattoos-fucks-in-multiple-positions-small-tits-big-ass/video-11783738

https://www.gotporn.com/jav-amateur-teen-satomi-debut-uncensored-action-baby-face-cute-girl-gets-vibrator-and-fuck/video-10334804