There’s a manga known as S Rare Soubi no Niau Kanojo. It has two instances of vore. Plant/F non-fatal (
http://lhscans.com/read-s-rare-soubi-no ... r-5.2.html) and F/F soft vore (
http://lhscans.com/read-s-rare-soubi-no ... er-16.html). The latter has a slight bulge, but I currently don’t know if it gets bigger, as the F/F one isn’t fully posted yet, so I don’t know if it’s fatal or not. Be warned they they’re in Japanese only so far.
I also found this:
http://readcomiconline.to/Comic/Grimm-F ... 3?id=21493It’s not a manga, but I saw Grimm Fairy Tales was mentioned here, so I thought I’d post this. For those wondering, it’s soft F/M vore with belly expansion. Shame we can’t find more of that kind of vore in mainstream comics.