From Wiktionary, the free dictionary
Borrowed from Korean 사생팬 (sasaengpaen), from 사생(私生) (sasaeng, “private life”) + 팬 (paen, “fan”).
サセン • (sasen)
- (South Korean idol fandom) sasaeng (extremely obsessive K-pop fan whose fixation on an idol is unhealthy and intrusive)
