The Water Mist successfully disrupted the perception of enemy's black silk threads, and the enchantment Finn Droste had set up in the room was temporarily rendered ineffective. Seizing the opportunity, Levin slipped into the room.
In the dark room filled with aqua blue fog, the visibility was extremely low, except for the sound of running water coming from the bathroom. Levin walked barefoot on the carpet without making a sound and first approached the desk to pick up the envelope lying there.
He needed to gather as much information as possible before Finn Droste came out, and the letters on the desk were sure to contain secrets.
The envelope wasn't sealed with wax, so Levin took out the letter inside, pulled aside the curtains a bit, and began to read by the moonlight.