Hi ya, have fun!
…
The first memory Merlin had of Arthur and coincidently something magical, was at the park when he was four years old. Merlin was with his mother whose best friend was Arthur's mother. Arthur and his older brother Will (who was 6) were kicking the football ignoring Merlin, who was instead on the playground with his sister Gwen.
After playing hide and seek, Merlin wanted to play Harry Potter. He was of course Harry and Gwen was Hermione. They picked up sticks and ran around the playground casting spells at each other. Merlin climbed up into the dark tower preparing to go down the slide. Wand in hand he yelled "lumos" pretending he was lighting up a Hogwarts corridor. It was much to his surprise when his stick alit at the end and the tower was bathed in a warm glow. He felt his eyes burn and he dropped the stick in surprise. "Cool" he said grinning wickedly and slid down the slide.
Gwen was at the bottom "oh look Merlin, I mean harry, we can be flying on the swings". She dropped her wand and they raced over to the swings. As they were swinging Merlin tilted his head back and saw Will and Arthur walking towards them. Will was scowling aggressively and Arthur was trailing behind him, smiling slightly in their direction.
Will walked up to the swings and said to Gwen "Move, I want to swing". She replied "No, I'm swinging". Will started to shake the chains violently until Gwen squealed and slid off the seat. Merlin said "Hey, don't be mean to Gwen". Will got on the seat and said "shut up big ears". Merlin glared. Will said to Arthur "come on little brother, get on the other swing" pointing to the one Merlin was currently on. Arthur hesitated looking at Merlin "umm, I don't really want to swing".
Merlin saw his expression and took pity on him "let's go Gwen, I'm hungry, let's get a snack". As Merlin looked back he saw Arthur get on the swing and their eyes met. Arthur smiled thanks to him and Merlin grinned back before turning away.
…