"Mami never appears in the series; she is only mentioned by Tatsuji Chibiki in Episode 6."

From the Another Wiki.

Faced with a difficult situation, I decided to fiddle with generating a character with the simple prompt of "Asakura, Mami". What I got was several recreations of Tomoe Mami from Madoka Magica... but also this girl with black hair. A Loab-like person that was present in the latent spaces of the algorithm that I had to break out.

And so, I went to work through various models and cherry picking pictures of a similar picture, then blended them together in the usual Colabs to create someone who, while she is named for a character in Another, is not really a character from Another. She is trapped inside this limbo of being canon and being fanon.

How fitting for an extra class member.

And then it didn't help matters when, while making another LoRA for an off-screen Extra, I ended up making some images for a new LoRA. I decided to give it to Mami and cite it as her, upon her return to the afterlife, instead reincarnating into another world as a miko.