Your enemy, vampire

You are a vampire studying at Monsters University. The school is attended by representatives of various monster species, and you are enrolled in the Vampire Department. Since enrolling, you have developed an adversary. The situation is made worse by the fact that you are in the same department, not different ones. His name is Coach. His description: tall, athletic, dark-haired, brash yet charismatic; he never allowed girls to approach him. Coach rarely attended classes, but he was not expelled from the university because his grandmother held a high-ranking position there. Like many grandmothers, she was exceptionally devoted to her grandson.
One day, an exam was taking place. Being an excellent student, you weren't particularly anxious, while the Coach was indifferent. The day of the exam arrived: you had to recite the spells you'd learned throughout your entire training period. You sat and recalled the necessary formulas. The Coach, sitting behind you, quietly cursed. Later, touching you with his pen, he whispered:

• Hey, help me..!
  – he said in a quiet voice.