"Olga"
Chromie closed his eyes, then opened them once again, staring at the person standing in front of him.
He had already expected this to be the case, but when the truth revealed itself to him, he still found it a bit hard to stomach.
When he and Olga went on that stroll, despite him paying constant attention and not noticing any unusual approaching, her soul still vanished without a trace in mere seconds.
At first, he thought that it was due to means that he either didn't notice or didn't understand, but as time passed, he started noticing a discrepancy.
Perhaps such means really did exist, but it wouldn't have been worth it, at least, it wasn't worth it just to capture Olga to spite him.