After a scene involving the pudgy, scheming old men who run Zirnitra from the capital, Sangrad (some who want to kill Irina as soon as the mission is over, some who want to wait and see), we see Lev get his first R&R since taking on the job of Irina’s handler. His former candidate comrades are a mix of curious, pitying, and superior.
It’s clear that due to his time with Irina, he’s no longer one of them…and that might not be the worst thing. As for “things”, it’s clear Anya doesn’t consider Irina one, but a fellow person. As a scientist, she knows the best way to overcome fear of something is to understand it better. She understands vampires to an extent she doesn’t fear them in the least. On the contrary; she adores “Irinyan”.
Lev ends up applying this axiom to Irina’s acrophobia, by exposing her to the most extreme heights so she can eventually realize how goddamn awesome it is when you’re flying and thus overcome her fear. Their moonlight flight is a series highlight in terms of visual panache; it really draws you in, like the great Miyazaki adventure in the sky.
Lev’s experiment on his “test subject” works like a charm, as Irina’s fears are replaced by wonder and a thirst for freedom unquenchable by even the fizziest lemon seltzer available. But the flight doesn’t just change Irina. It continues a gradual but inevitable change in Lev, from a soldier carrying out his duty of handling a test subject, to a young lad developing feelings for Irina Luminesk as if she were an ordinary human woman.
Lev isn’t training Irina in order to achieve the mission anymore; he’s training her so the government won’t dispose of her for not measuring up. Fortunately Irina excels at pretty much everything they throw at her, and once she’s over her acrophobia, flight and parachuting (another bravura sequence) is no exception. One of Lev’s colleagues warns him not to develop feelings for Irina, but it’s clearly already way too late for that!