This is the 9108th most frequent Japanese word.
火付
"火付" (ひつけ, hitsuke) refers to "arson" or "setting a fire."
In this sentence, "火付け役" is used metaphorically to describe someone who sparks or initiates an endeavor or movement.
火付け役として、彼はキャンペーンを成功に導いた。
As the initiator, he led the campaign to success.
Here, "火付" refers to the act of setting something on fire, specifically arson.
火付が原因で村が焼けてしまった。
The village was burned down due to arson.
In this usage, "火付け" is used metaphorically to describe the ignition, symbolizing great enthusiasm or fervor.