Now this is a great find! The woman on the cover has clearly been drugged (you can tell from her expression).
Inside, we are treated to a very nice knockout sequence. The red haired girl on the cover is confronted by another woman wearing a veil. The veiled woman takes
an injection gun to the red haired girl's neck. She becomes woozy as the drug takes effect, eventually becoming unconscious. The main character (guy with blonde hair) also gets injected!

As a double plus, the red haired girl can be seen bound and gagged earlier in the same issue!