C337 Suspect(1)

This must be a threat letter, right?

Yet, why doesn't it feel threatening at all? Shouldn't there be something horrifying included, like a creepy doll or some bizarre items? Instead, it's just a blank piece of paper—hardly menacing.

Hsiang Tai neatly folded the letter and set it on the coffee table before sinking into the sofa. He massaged his temples