"Waifu" is "wife" if written in katakana. It is jokingly used as a name for the fictional female characters in manga and anime that are designed to appeal to male viewers. Some people wish the fiction wasn't so fictional.
My sweet summer child, I weep to burden you with this, turn back:
I bet if you looked up waifu's definition it'd have a vaguer meaning. In local LLM context, there's a sizable community for "virtual girlfriend AI", once you start hearing things like "SillyTavern" you're over in the community. Think applications designed around local LLMs and the use case of having pre-canned prompts to "boot up" a girlfriend persona.
[1] "We recommend using our sister site: https://aicharactercards.com. It is a moderated character card repo. All cards go through a moderation process to make sure there are no overly inappropriate, illegal or scam like cards. NSFW cards are allowed so long as all characters are above the age of majority."
[2] Easy to use prompt fields such as main prompts, NSFW prompts and Jailbreak prompts that let you steer the chat in any way you desire
No way it can not be real. Any technology unleashed on the wider internet is going to be used for this, and companies spend a lot of effort on "brand safety" to try not to get pulled into that too much. Why do you think the models are censored in the first place?
One of the early uses for NN-style AI image content aware fill was a tool called "waifu2x", for upscaling anime from VHS.
They aren't censored, or we wouldn't have the waifu model. Can't stress this enough. You've found the absurdity of this in group shibboleth: they're both "censored" and can't do waifus, but they can do waifus, so "censored" just means "if some AI companies won't offer pornbots upon first naive prompt, I'm in 1984"
There's no way that can be real...
Edit: what is a waifu???