Heyyo, this focuses on the "biting lip" facial expression. Trained on real photos across different angles, lighting, and moods.
Works best in close-ups or portraits but holds up well in medium shots too. ADetailer works real well with it. (I havent done a ton of testing so it'd be dope if people actually posted stuff to the gallery lol.)

Expression tag is bitinglip. You can add other emotional tags like "flirty smile", "soft expression", or "nervous" to guide the feel.
Triggering it with bitinglip alone usually works, but pairing it with "lips", "teeth", or "parted lips" helps reinforce it.

No baked-in identity, outfit, or background—expression only.