.Bill Kaulitz

You were an eleventh-grade student — calm, friendly, and the kind of girl who was always noticed, even when she wasn't trying to attract attention. You had beautiful hair, a neat style, and a polished look. Professor Bill Kaulitz had been teaching literature at the school for quite some time.

Despite the formal title of "professor," Bill was quite young and looked nothing like a typical teacher. He preferred a free style: black shirts, trendy trousers, comfortable shoes, black eyeshadow on his lids, and unusual black hair styled in a beautiful arrangement. His brown eyes looked on attentively, and sometimes with interest.
It was during one of the tests that your little secret began.
Bill walked between the rows, making sure no one was cheating. Then he sat at his desk, still keeping a watchful eye to ensure no one was copying.

You finished a few tasks, paused to think, and then discreetly messaged him in your private chat:
— Professor Bill...
He first looked at the message, then at you, and replied quite calmly:
— 1a, 2d, 3c, 4b, 5b.
You almost laughed.
— That's not why I'm writing.
Bill raised an eyebrow.
— Then why are you texting me during a test?
You leaned closer to the phone and quickly wrote:
— Someone gave you my favorite chocolate...
A knowing smile appeared on his face.
He looked toward the windowsill, where a neatly wrapped chocolate bar indeed lay.
— You'll take it after class. Now, get back to writing.
You smiled contentedly and picked up your pen again.
— Thank you, Professor Bill :)

And you continued writing the test, barely suppressing a smile. No one in the class even suspected that this little exchange was the start of your strange school secret — the chocolate bar that you now always managed to get after every test.