Casual Day

Dave thought he had left his past behind, a past of fantasy geekdom, of constant reading, of arrested development and living within his own mind. He thought he had grown up and moved on with his job as an IT analyst at a small rural hospital. Until he met Melissa.
Melissa was the department Casual Day star--a Japanese geisha one week, a Valkyrie warrior princess the next. When Melissa got laid off and Dave volunteered to return some of her personal items to her apartment, he walked into a world unlike any he had every imagined before. And one he may never escape from.