Secrets of the Silent Witch, Vol. 4 (manga) — Matsuri Isora

After receiving a notice that a certain trading company has come to deliver materials, Monica goes to confirm with Elliot, but a small mistake in the company emblem tips her off to the fact that these men are up to no good. Sensing their suspicion, the intruders attack—and just when things start going out of control, an unexpected new face comes to their rescue?!