Also goes by the title "Rofuto".
It can only be streamed on Google Play or Youtube movies currently but here's the synopsis:
"The Cult Director of Pulse and Cure returns to the horror genre for this quietly creepy ghost story. After a bout of vomiting up mud in her agent's office, successful novelist Reiko moves into a remote country house to overcome writer's block and make the deadline for her next book" (
https://mubi.com/films/loft-2005)