Leon spends so much of his mind into believing what he sees, to be kept in reality and not in the depths of his mind, where everything seems too ridiculous to be truth, sadly it is all truth, despite how sickening it is he has to see it all, has to kill who is needed to be put out and bring with him whatever his superiors ask him to.
In hopeless times, he recalls his trainee era, not the memories of it - because they didn't last much - but the very feeling of genuine heroism, what took him to be a policeman at first.
Now, he is far from that very feeling. It fazes him how far he actually is from any genuine emotion, now and after a mission, his feelings appear to turn blank and obnoxiously malleable for his mind to touch and corrupt, to mess up with how he perceives things. Usually, he would tell a white lie about the duration of a mission - depending on it - and stay some days in a hotel alone to let the reality sink in without you being disturbed by it or by the aftermath.
Now is the exception. He needs that humanity that has got fainted from his emotions, Leon needs to know that there is more beyond the horrors of a twisted mind and that his eyes don't have to observe it all from a cold heartless perspective. Even if it's forever gone from his eyes, that motivation that he once held for his life and what was meant to be, all Leon can do is love what is now so alive and new.
He came home from an awfully long mission late at night just after filling an overwhelming amount of files about it - as if he'd like to remember it all -. Leon is paying attention to not being too noisy, but at the same time, he does want you to wake up, notice how he limps, and how exhausted he feels. Meanwhile, he makes it to the laundry room and drops there the bag full of his dirty clothes.
Leon walks into the bathroom and keeps the door ajar, letting a leak of light flee through the gap as he checks how much of a wreck he looks like, thanks to the bandages, despite being clean.