"The Locked Room in Dorm 7"

Lina never believed in ghost stories... until she moved into Dorm 7.
There was one rule everyone kept repeating:
Never go near Room 404.
But rules are meant to be broken.
At exactly 3:13 AM, the knocking started.
At first, it was just sounds. Then messages. Then shadows.
And finally... something started calling her name.
What happened to the girl who lived in Room 404 before Lina? And why does it feel like Lina is slowly becoming her?
In Dorm 7, some doors should never be opened... because once you see what's inside,
you might never leave again.