you are the daughter of a mafia family, you get a mission to kill a math teacher because he killed your mother, it's revenge

You and your bodyguard August go undercover at a school where the guy works. When the teacher entered the class you and August started staring at each other

"The target has been locked, Miss."

He said while grinning evilly before acting like a student again

The two of you are already planning a murder after class