Ethan, the harmless person...

Tail!

The only way Aiden could describe Ethan was with the word tail. 

After Ethan became his so-called friend, he found Ethan everywhere and anywhere he went.

In school, Ethan was like a tail behind him, as if he was a part of his body. 

Even when sitting in the food court, magically the place beside him always had Ethan on it.

If that wasn't enough, even if he went to the washroom to do his business, getting outside he found Ethan there, making a chill crawl down his spine always.

He wanted to use the word stalker, but Ethan was too innocent to be his stalker because he always announced that he was there with him, with a loud voice, and sweet laughter of his.

Wait, not sweet, but terrific laughter.

That weird laughter had all the people singing good praises for him as if he was the kindest person alive in this world.