팬심 /paen-sim/
Fan heart / Deep fan loyalty
Combines 팬 (fan) + 심 (heart/mind). Refers to the deep affection, loyalty, and devotion a fan feels toward their idol or favorite public figure.
Examples
팬심으로 앨범 샀어
Bought the album out of pure fan love
팬심이 대단하다
Your dedication as a fan is incredible