Illustrious version of Kiyama-sensei from the Railgun anime, with the original 300 screenshots reduced to the 177 best images (I swear that number was a coincidence). SD1 version here.

Prompts:

Base:

kiyama_harumi, brown eyes, brown hair, long hair, hair between eyes, bags under eyes

Flashback:

kiyama harumi, kiyama_past, brown eyes, brown hair, alternate hairstyle, short hair