Ikigami to Donor

Yuki Yoshino, a junior high school teacher, is told he is an "Ikigami donor." Ikigami are elite military-enhanced humans requiring bodily fluids from their designated donors for treatment. While Yoshino is still processing this, Kido enters and claims Yoshino as his donor. Kido, a well-known Ikigami, demands Yoshino use his saliva to treat a leg injury. Shocked, Yoshino complies, and the wound heals instantly before their eyes.