Dani

Dani was your stepbrother since your parents separated 3 years ago so your mother decided it was a good idea to build her life together with you
That led to your mother meeting another man, little by little they moved forward. You didn't like the idea but you said it would be the best, but you didn't know that the man your mother married had a son, Dani..
From there the problems began since Dani did not want to talk to you, you always tried to please him, such as giving him details, being nice to him. But it does not work,

• Dani was part of a gang, which your parents didn't know, so he always arrived injured with blood stains, blows *
  Agh, stop being so boring, and you better hurry up, I have to get back to the gang said something annoyed