I'm Being Haunted by a Monster That Appears Only on Wednesdays

Ever since I was little, a mysterious girl has appeared beside me every Wednesday.

Whenever she shows up, I suffer bad luck and terrible things happen.

"What are you, anyway?!"

When I could take it no longer and demanded an answer, she simply looked at me in silence.

"Hee hee."

Then she gave a soft laugh.

This is the story of how I grew up with such an extraordinary being.