입덕 /ip-deok/
Entering a fandom / Falling for something
The moment you fall into obsessive fandom — 입 (enter) + 덕 (fandom/otaku). The gateway experience that makes you a hardcore fan.
Examples
그 드라마 보고 입덕해버렸어
I fell deep into the fandom after watching that drama
입덕 계기가 뭐야?
What got you into the fandom?