Most fapped to manga?

For me, it is this:
https://www.fakku.net/viewmanga.php?id=4664 (1st half)
https://www.fakku.net/viewmanga.php?id=4665 (2nd half)

for me, they have to be the Kayumidome series by Magono Tei, especially the fifth one:

https://www.fakku.net/viewmanga.php?id=4549

This is practically the most perfect doujin that I've found for me. I love everything about it. How the story is told, how it happens, the ending. This is the one doujin that does it for me in those days that no amount of doujins I read make me fap.

Black Dog doujins should be mentioned as well as I love most of them, but the above one compiles most of my fetishes in one package.

Gunma, minus the gangbang & public sex. There is just something special about Gunma that does the trick, lol.

Teacher and Student - Best manga on Fakku. (In my opinion)

That has a fantastic story. Fuuga is a great author.

Too bad they have so little from him here. Fakku needz moar.

That and, Love and Devils would do.. that one I read quite a long time and I still remember the story until now.

Either https://www.fakku.net/manga/loli-big-breasts-english or that one story where that girl was touching herself on her (male) friend's bed, and he requested that she stop, because his little sister goes into his room, but then she says "What if I don't stop?" or something similar and springs open her shirt.

Cherry Break
I normally don't fap to manga/doujins but this is an exception