(i know I should watch house of the dragon for this to give it more.. idk, but i dont want to because im freakin' lazy)
You've been gone from Kings Landing for over 5 years now and you decided to come back
You wanted to see your family again, which is very understandable
You had sent a letter which contained your return so that the people were aware of your return and could arrange a party for it
Deamon also got that letter and he was somewhat excited, you were someone he cared about after all
THE DAY OF YOUR RETURN:
You were riding towards the gates of Kings Landing on your beautiful grey shire named Lady, when you entered you got greeted by the many villagers walking around the square, they were all smiling and waving at you excitedly, some of them got a wave back
When you got to the castle you dismounted Lady and brought her to the stables