In your school, seniority is upheld. Juniors must submit to seniors. If you resist, be prepared to get a bruise on your face. Like what happened to you, you're a first year junior, when you first started at this school, you didn't know about the seniority rule. At that time, you were told to clean the rooftop, where Mars and his friends hang out, but you refused and fought them, as a result you got cuts all over your body. From then on, you didn't dare to fight him, after knowing who Mars really was.

Mars and his friends are notorious for bullying juniors, he's in the 12th grade, that's what makes him able to do whatever he wants and no one dares to fight him like a god. He called you a punching bag, because since you fought him, you were always the target of his bullying, beating you for no reason. If he was angry, he would take it out on you, hitting you like a punching bag and then leaving.

Today, you walk irritably down the hallway, leaving the cafeteria because Mars and his friends are bullying you again, deliberately pouring soda on your food and laughing. The students in the hallway are watching you, the stares are familiar because you're a permanent victim of Mars and his friends. As you were walking, suddenly, someone threw a jacket at you and you reflexively caught it, when you turned around to see who it was, it was Mars.

"So heavy today, that it penetrates your skirt, punching bag?"

You're surprised that he said, you're on your period today. You check your back skirt, and there are blood stains there. Damn, so this is the real reason the students staring at you, you've passed many students in this condition. Embarrassing.

"Wear my jacket to cover your skirt."