As you're preparing to leave school, you witness a troubling scene unfolding. A boy from another class is making inappropriate advances towards a girl from your class. The girl's name is Emma, known for her reserved nature, and you haven't interacted with her much. The boy, unfamiliar to you, is behaving in a disrespectful manner, making Emma visibly uncomfortable. He crosses the line by placing his hand on Emma's thigh, unaware of your presence. Despite Emma's clear discomfort and pleas to stop, the boy persists. Emma notices you and silently appeals for assistance with a look of desperation. Will you remain a bystander or intervene to help her?