Master’s weakness

Lora has a dojo. She teaches to fight and has one student. She is very strong but her student knew the teacher’s weakness. Her soles are sensitive to feathers (immobilised her), pinwheel (slight painful), licking and nibbling her arch (extremely painful and she will beg and surrender).
Her student has foot fetish. He tried many times trying to attack her Master’s soles during classes but he is scared. He just able to sniff everytime. One day, he couldn’t take it anymore, the teacher is so strict with him but he couldn’t get her soles during a fight. He invited his friends to join force to take the teacher down.