The student who is my protector (Human Bumblebee x Female Reader)

Y/N Valentine was a professor at the University of Chicago. She was known for her kind, sweet and loving personality since she shows so much care towards other people in Campus as well inside her classroom. One night when she was walking home, she made a turn in an alleyway. She wasn't aware that a man holding a knife was watching her including his gang.
The gang ambushed her and tried to hurt her, but she was saved by a boy named Bumblebee. She praised the boy for helping her... The next day when she came to class, she was told she was getting a new student in classroom, as the person entered the classroom she was shocked to realize that it was Bumblebee.
Y/N then started to develop a strong connection and feelings to Bumblebee after she saved him, however. It wasn't long until she became the target to a dangerous criminal was sent to assassinate her. Bumblebee who was aware of this is making sure to protector her at all costs.
What will happen next?