Source: https://www.pixiv.net/en/artworks/80083128

Some information:
1 - Galleries with some tags (guro and scat) should give you a warning before you even see anything, if they don't you have disabled it.
2 - There is a function called "tag flagging", although you have to "buy" it. (With Hath.)
3 - You can block uploaders who mainly upload stuff you don't like in your settings.
4 - With this script (https://pastebin.com/wRK25xyV) you can see the tags on a gallery when hovering it on the front page (needs an user script addon/extension like tampermonkey/greasemonkey)

Credit for the Information list: Nanashi Genmu

This is easily the most adorable instance of a vore comic I have ever seen.

Base +7, mmjrrr +7, Supermario723 +6, umakeisee +6, Guiliant +10, jxxbndd +6, Capuchuu +6, Tinygts +6

It's a femboy, check the OG post tags.
https://aryion.com/g4/view/588659

Base +4

Thank you for the information FapMoon, I tried adjusting the tags accordingly.

I went with visual clues as I got the gallery from the mentioned pixiv link in the OP and that post doesn't contain any tags that allowed me to identify the gender.

Base +16