Of course that is not to say Luna is perfect in all her mechanisms. There are a couple of times Sigma’s narration regards her as almost robotic, mostly when it comes to her lack of many reactions. In Sigma End she is noted in particular to not even be fearful that the bomb is about to explode and kill everyone, only calmly stating that their time is close to being up. She actually seems to be more hopeful than afraid, even though everyone in the facility is about to die from the explosion of the bombs. There are also times where she seems to be incredibly knowledgeable, more so than the average person, and can explain certain concepts very clearly and without much hesitation. Like when explaining Radical-6 to everyone else after Quark’s infection, she speaks of it in a matter of fact tone and without panic, even though she is describing a virus that causes invasive suicidal thoughts. This could be attributed to her acknowledgment of different histories existing. If that is the case, it only becomes more disturbing. That she is ok with dying because she knows that the history she dies in is not the one where Dr. Klim’s and Akane Kurashiki’s plans come to fruition. So it is ok that she dies, because there is a better future waiting out there someplace. It is nothing human-like at all, which only serves as a staunch reminder that she is a robot and programmed to act human. There are many strange things in the Zero Escape universe, but robots cannot just become humans and Luna, for all her humanity, is but a robot programmed to have advanced emotional responses.

It feeds back into what she believes the message of the music box she was given is. That “happiness is always close by” and she only has to wait for it to come into reach. But that even should the caged bird leave, it only means that happiness is something to be searched for and not to be kept forever (which is how she interprets the ending of Materlink’s Bluebird, where the captured bird representing happiness flies away and the main boy Tyltyl vows to find it again). She describes herself to Sigma as shy, not having many friends and how she has felt lonely because of it. It is not really her fault so much as it is a fault of her environment and her orders. Luna is a passive bystander who does not seek happiness, but knows that it is somewhere waiting for her, whereas she compares Sigma to one of the main characters who goes after the bluebird that represents happiness. The only time she seems genuinely sad that she is about to die is in Luna End, where her human exoskeleton is breaking apart piece by piece and she can only wait for a certain end. Any other history where she dies she accepts it, even a faked one in timelines where she is “killed” (supposedly by Clover, though it never explicitly stated outside of Luna End) and does not reboot herself (again, Luna End is the only time when this happens). She is always looking for something better by encouraging it through passive means (like telling everyone to ally and not betray) and yet is not capable of remembering different histories she experienced like the espers (Sigma and Phi) do. So without remembering any of the other possible histories/routes, Luna is still always hoping for the same thing and yet never actively seeks it out herself until Luna End, which ends with her being destroyed for her actions. It is ironic considering the Laws of Robotics operates under the belief that robots should aid humanity in an active way and not passively allowing things to occur as they do without intervention, but Luna herself is a very passive character in regards to her actions in the game and that her only display of active actions lead to her demise.

The take all from this is that Luna is genuine in her display of humanity, despite not being human at the same time. Someone might suspect her kindness and passive nature is an act, because truly no one can be so altruistic and caring about others more than themselves, but it is not an act so much as it is how she was programmed to be. The Laws of Robotics is fitting for Luna’s programming, because its main idea is that the concept of humanity is abstract and that robots can be programmed to act just like humans do under the laws and benefit other humans. The game even discusses this during Luna's route, with another GAULEM called G-OLM explaining that a robot is not much different from a human because robots are able to "feel" emotions through way of cause and effect reactions (like the robot having aching shoulders because their body is severely outdated due to lacking maintenance checks). Luna is not a human of course and is aware that her personality and behavior was originally programmed, but she herself does not think that she is just metal put together and code written by a scientist. She is functioning in all capacities, has free will to disobey orders and even the Laws of Robotics she was programmed with, and exists to serve others and not only herself. And really, in the end, isn’t the core basis of humanity is that everyone is in it together and no one should be against each other. If so, then Luna is as much a human as any of the other characters and at the same time not.