This is a word, and try guessing it!

a person or thing that came before and influenced sb/sth else that is similar

I think perhaps you are talking about [outrunner]?

回復 @圓環之理：Not exactly but very similar. This is the synonym and some letters of "outrunner" are the same as this word.

回復 @啊啊是誰都對：forerunner?

回復 @淺風仁櫻：That's right! And wanna try giving us a question?

回復 @啊啊是誰都對：Let me see