Slight Physical Injury

A case was filed against me when I hit my classmate at school. He was 16 then and I was 18. There were no major injury but a slight scratch on his face. They filed slight physical injury against me and demanding for 150,000. We attended mediation and their demand dropped to 75,000. My uncle is willing to pay 50,000 but they're firm about the 75 thousand. The mediator already told us that the judge won't accept the 75,000 as payment. So the complainant's lawyer told my uncle to just settle the payment without letting the mediator and the judge know about it and our case will be over. Also, we felt intimidated by the complainant's lawyer because he would only talk to us every time our lawyer is not around.

My question is, can we hold the 75,000 demand and the intimidation against them? What are the possible punishments for this case? And how much should the fine be and is the 75 or 50 thousand reasonable for a case of slight physical injury?

Thank you so much for your time.

i think that's way too much, but you can't use their demand for anything.