Shaman

Here's an improved synopsis for "Shaman" incorporating your requirements: "In a world plagued by terrifying Curses, a young Shaman and his comrades stand as humanity's last hope against the encroaching darkness. Their battle takes a chilling turn when deadly chemicals, illicit experiments on lab rats, and genetic mutations become entangled with a mysterious death. Shamans—those who can perceive and manipulate the spirits of the departed—are humanity's only defense. But for our protagonist, the fight is deeply personal: he is haunted by visions of a girl, the very girl his step-brother murdered. What secrets does her spirit hold? Read Shaman on capitulos.cloud completely free and without intrusive ads." Read the MANHWA (Xamã, Chamán, The Shaman, 샤먼, シャーマン, 萨满) online at ChapterCodex for free, with non-intrusive ads and the latest chapters updated.