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?!