I dunno about the low rating, I for one am extremely grateful these are being uploaded here, especially in English. Japanese weight gain manga is not nearly common enough so this is a rare treat.

Base +6, VoidStar46 +6, copperheart +8, Bunsig -8, RandomAn0n +8

@Xx360BlitzkriegxX
This collection (besides 9 new pages) has been uploaded before, where it earned a 4.62 rating: https://e-hentai.org/g/1772127/686f53a7ac/
But this gallery in particular seems to have been targeted for negative vote-bombing. The earlier gallery's ratio of favorites to ratings is 100/38, while this one is 26/44.

Base +6, VoidStar46 +6, RandomAn0n +8

Hmmmm... Maybe just people just pissed at what would appear to be a lazy re-up. I'm glad this uploader seems more keen on keeping it current, nothing wrong with that.

Base +6, Bunsig +8, RandomAn0n +8

I don't know how this is not popular, aren't people here mostly americans?

Base +6, Draw99Gray +18, copperheart +8, REDACTEDVII0 +3, RandomAn0n +8, DreadPool +6

Who is the artist behind this?

Base +5

It's from 葉ボタン

https://www.pixiv.net/en/users/8891525

A couple of new pages there too, if I am not mistaken this series is nearing its end and they've started a new series on their Fanbox

Edit: that's this one, no english translation yet:
https://e-hentai.org/g/1825258/e3599690df/

Base +5