Nyamo-sensei, from Azumanga Daioh. Everyone's favorite PE teacher.

I included her blue tracksuit and swimsuit in the LoRA, everything else in the preview images is just prompted normally.

Appearance:

nyamo, anime coloring, black hair, short hair, sidelocks, blue eyes, breasts

Tracksuit:

blue tracksuit, open jacket, yellow shirt, collarbone, whistle around neck, sneakers

Swimsuit:

blue swimsuit