Since this word is made up of a single kanji, it should use the kun'yomi reading. When learning the kanji, you didn't learn that reading, so here's a mnemonic to help you with this word:
Just imagine your parents saying oh yah (おや) over and over at you. What did you do at school today? I beat up this kid. "Oh yah?"
My parents moved near the hospital last week.
I think my parents are overprotective.
This is so unfair! Midori gets everything that I want. And, on top of that, she doesn’t have my mom and dad for parents.