As Asuka pushed the button in to seemingly activate the pen, instead of a tip appearing what really happened was a bright flash of light shined into Karen's eyes. At the same time, a hypnotic tone emitted from the pen and was audible only for Karen's ears. Since Asuka wasn't staring at it, she didn't get the full doseage and wasn't affected.

"Hmm? Karen-chan? Is everything okay?"