Shiki S01E09 - Ninth Coffin

Toshio and Seishin guard Setsuko at the clinic, suspecting a shiki attack. Nao appears outside but cannot enter without invitation. Later, Tatsumi gains access through Toshio's wife and overpowers Toshio, allowing Nao and other shiki to drain Setsuko's blood. Toshio is left grieving, realizing the clinic is no longer safe.