So I was looking at yuri, and wondered what an image like https://danbooru.donmai.us/posts/6495522 should be tagged with? A couple carries the insinuation of two consenting partners, and I'd love a way to view more of these polyamourous pictures, regardless of orientation or specific amount of partners.
But what about fff_threesome (and other threesome tags)?? Well that implicates threesome. Which is defined as "A threesome is any is any sex act involving exactly three participants at the same time." on danbooru. There's no sex in an image like https://danbooru.donmai.us/posts/7358164
There would obviously be overlap in a polyamory tag with threesome and orgy and what else, but this seems like such a clear missing tag.
And no, this isnt just harem , and it is defined as 3 or more characters showing affection towards one individual. Affection in these images and many more are with only 2 characters showing affection, and the affection can also be not singularly focused on one single person in the situation.
I've only used yuri as examples here but there's plenty hetero and yaoi examples: https://danbooru.donmai.us/posts/7029195, https://danbooru.donmai.us/posts/6754747