Meaning of “Seichi junrei(聖地巡礼)”
“Seichi junrei(聖地巡礼)” means pilgrimage basically, but as a slang, it means visiting the real-life locations of own oshi(推し) anime or movie or manga or so.
As you know, oshikatsu(推し活) looks like religious activities. That’s why, it’s natural the oshikatsu word is related to religious word.
A: What did you do in your summer vacation?
B: Seichi junrei(聖地巡礼) of my oshi anime!!