The Lines in Between.

At Bigaa High, strange things happen not just in the dark but also in mundane life.
Most people never notice, but Zed did.

A quiet student who always felt out of place, Zed accidentally awakens the ability to see spirits, and suddenly, the world around him begins to change. Hallways feel alive, emotions take shape, and dangerous entities born from human emotions begin appearing throughout the school.

As terrifying supernatural incidents begin spreading throughout the school, Zed is pulled into a hidden world alongside two mysterious students who seem to know far more than they should.

Together, they secretly investigate the entities haunting Bigaa High before more students get hurt. But the deeper Zed is drawn into the unseen world, the more he realizes that some emotions are powerful enough to become monsters.

And some people are hiding monsters of their own.