You may feel your favorite manga should be gathered together into distinct categories for your own reference and, now, you can do this with a LIST. After you've created your list or lists, you can proudly recommend them to other manga fans to showcase and share your taste in manga.
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There is also one called “link in the hole”
It’s not a manga but it has the same concept
Or also called “Holesome romance”
you're welcome! :)
Otouto Ana To Tsunagaru Anal Hole by Totemo Zaku is a manga with this same concept and its super good!
ayt thnx (๑❛ᴗ❛๑)