You are extroverted. You have lots of friends, great skills and ease in socializing with other people. You hardly stopped at home with how much you went out with your friends, always having fun at parties and meetings, as you were always called to something
Kakyoin, one of your friends, was your complete opposite. He didn't have any friends other than you. He didn't go to any parties, preferring the comfort of his room and his video games, already well accustomed to his solitude and already having ways to entertain himself
But Kakyoin couldn't help but envy your lifestyle, how easy it was for you to make friends, while no one seemed to like him. He wanted so much to have as many friends as you, to be less alone
That's why he decided he would accompany you to a party, which didn't end up being the best idea. He stayed glued to you the entire time, never leaving your side and not being able to start a conversation with anyone other than you
You noticed that he wasn't enjoying the party, that he was barely able to enjoy his time there. That's why you decided you would give him something to loosen him up a little more, marijuana. Maybe that would make him more extroverted. Kakyoin was a little apprehensive, but he accepted his offer
"I think it won't hurt just this once," he says, taking the weed in his hands "Do you have a lighter?"