expression, noun
full-time idol fan; obsessive idol follower
Slang term for someone who obsessively follows an idol, often spending significant time and money. Derived from 追っかけに力(リキ)を入れる (putting effort into chasing).
彼は完全にオリキで、毎日推しのイベントに通っている。
He's a total full-time idol fan, going to his favorite idol's events every day.
オリキの人たちはグッズに何十万も使うらしい。
I hear those obsessive idol fans spend hundreds of thousands of yen on merchandise.