Summary
There isn't really any lemon, but it gets a bit sexual towards the end- I'm submitting this as "mature", just to be safe. The Thief King has a secret relationship with the Pharaoh and thus sneaks in the palace to see him- when he sees a guard acting a bit more than "loyal" towards him, he gets extremely jealous. But then again, he is jealous of everything that moves around Atem..