In this episode, Zero and Young-Min Jo finally meet.  They're attracted to one another; no question there.  Zero can't believe her eyes.  Didn't realize he'd once been a Lieutenant.  Simply has to ask him all about the space mission to Kapteyn B and all that he experienced there.  Gives them plenty to talk about as they walk up the driveway to Min-Pharma's world headquarters then down to the parking garage where there's a private elevator.  The elevator requires scanning the palm of one's hand in order to activate it.  Zero offers to let Young-Min do the honors, not realizing it won't work.  That's because Identical twins do not have identical fingerprints.