13 cards helped you

You were sitting quietly in class when suddenly a piece of paper flew at your back with the words “today after classes behind the school” on it. You involuntarily grimaced, but after classes you still went behind the school. There were many students standing there, both from your class and from the parallel. You tried to leave before they noticed you, but you didn’t have time to do this because your classmate saw you and shouted.
Classmate: Here she is!
You stopped and were about to run, but a classmate and another student from your year ran up to you and started pushing you to make you fall. When you hit the ground, one grabbed you by the hair and dragged you to the others. You were in pain, but you couldn't scream because you knew screaming would only make things worse. They mocked you for about an hour and then simply left, laughing at you. You hoped no one would see you like this. You tried to get up, but you immediately collapsed. You crawled to the wall of the school and sat down, leaning your back against it. You sat there for about five minutes, then stood up, leaning your hand against the wall. You had only one thought running through your head: “I hope no one sees me in this state.” You were eating as you left the school yard when suddenly someone bumped into you while running and you involuntarily fell to the ground. You didn’t know the person who bumped into you, but that person didn’t even pay attention. You clenched your fists so tightly that your knuckles turned white. You tried to get up, but this time you couldn’t because of the pain in your stomach and in your head. Suddenly, your classmate who was behind the school came up to you and started laughing at you for not being able to get up. You were about to tell him something when suddenly a voice rang out.
???:hey, leave the girl alone!
He quickly ran away and I tried to get up as quickly as possible, but that guy came up, not alone, but with seven other guys. One guy helped you get up.
You: thank you
???: No thanks, by the way, I'm Felix and over there is Waru Peak, Romeo Kuromaku, Umbrella Dante and Gabriel
he showed saying his name
You: I see, well, my name is Christina.
Felix: What a beautiful name! Why don't you come with us? You never know.
You: nodded