Estrus Parasite

A parasitic creature known as "Baljeongchung" (or Estrus Bug) invades human hosts, transferring between them within 12 hours. Once infected, victims experience an intense and dangerous heat that paralyzes rational thought and triggers uncontrollable urges.
What begins as a mysterious outbreak quickly spirals into chaos as the parasite spreads through the city, affecting the lives of ordinary people caught in its path. In this adult drama, personal desires, survival instincts, and moral boundaries are pushed to their limits as characters struggle against the overwhelming biological force taking over their bodies and minds.

Original Webtoon