This one is like, Ink is a good father figure to Error who has an abusive dad.

Error POV
  Ink had just finished bandaging my new cracks. He looked worried.
  "Mr. Ink, did your dad hit you?" I asked.
  He looked a bit shaken with the question.
  "No, but he tried to slit my throat once... he Uh... he's mentally ill." He answered.
  I hugged him. He hugged back.
  "I'm sorry that a court date is taking so long. I promise though, I'll get you somewhere safe one way or another." He said.
  I started to cry.
  "B-But I wanna live with you sir! Why can't... you be my dad?" I asked.
  He gave me a comforting smile.
  "I'll try to get it to happen. I can only do so much. For tonight, I'm taking you to your brother. I'm glad you came to me instead of your room."
  He took my hand and we walked to my older brother, Geno's house. He lived with his husband Reaper, and son, Goth.
  "Ink, what are you doing here?" Geno asked.
  Ink gently gave my hand to Geno. Geno sighed.
  "He hurt him again?" Geno asked.
  Ink nodded. I hugged Ink and he left.
  "Error, I don't get why you don't just move here." Geno said.
  "I...I like Mr. Ink. And you'd make me go to another school." I answered.

Ink POV
  I can't believe his dad. How could he hurt him!? I thought about it day and night. I'm starting to loose sleep. That kid tries so hard but gets beat by someone who should support him!
  A court date finally came and I went to battle for custody of this child. I was surprised to see his brother not there.
  Error ran to me and hugged me.
  "I hope this works..." he said.
  "It will. Even if I don't gain custody you'll finally be safe." I told him.
  We let go of each other and court began.
  "Ink, why do you feel you could take care of Error. You have no spouse, no kids of your own, and have emotional issues of your own." The judge said.
  "I am a teacher. And as such I can only do so much to help and protect the kids I work with... this one needs it most. I don't know about you but, I think its... an injustice to send him back with his dad." I answered.
  After hours and hours of convincing he asked a question that shocked me.
   "Error, are you in a relationship with your teacher?"
  "What!? No! I just... he is a father figure to me... I wanna go with him..." Error said.
  "...very well."
  Another eight hours and I finally gained custody! Error is safe now.