Human Lost: Ningen Shikkaku

In Showa 111, medical nanomachines and the SHELL system have conquered disease and extended human life, but immortality has not created freedom. Citizens endure exhausting work schedules and rigid social control, while anyone disconnected from SHELL risks transforming into a monstrous Lost that authorities destroy on sight.

Painter Youzou Ooba lives on society's margins until he joins his friend Takeichi in a desperate attack against the system. When the operation collapses, both men become Lost, yet Youzou does what almost no one can: he returns to human form. Detected by Yoshiko Hiiragi, an investigator tasked with hunting the creatures, Youzou becomes a key to understanding a growing wave of Human Lost incidents that may expose the true cost of humanity's engineered paradise.