This is the flux1 dev prototype of Katsuragi Misato, the beautiful, sexy, lovely big sister / waifu.
The trigger word is just "ppmisato". Use the trigger word where you want to describe her. You also need to describe her hair color, as flux had issue remembering that. You can start your prompt like this:
"A detailed solo portrait of ppmisato. She has purple blue hair. <the rest of your prompt>"
As shown in the showcase images, you can draw her in different outfits and settings.