Two short lines carry a surprisingly sharp idea: we tend to see in other people what we already want to see. The speaker starts from a slightly bitter observation, that people don't really look at who you are. They look for a version of you that fits their hopes or expectations. The title, "Illusion," points to this gap between the real person and the picture others build.
The second line is the twist. Instead of hiding or performing, the speaker chooses to show everything. It could be read as quiet defiance: if people will see what they want anyway, why bother editing yourself? It might also carry a hint of weariness or even a challenge, as if the speaker is saying, here is all of me, now see what you do with it. The mood is calm but a little guarded, honest on the surface with a trace of hurt underneath. The simple, almost conversational wording makes the openness feel deliberate rather than naive.