While sitting with Aiden in his chair, they began conversing with him, they were so happy to see him safe and sound. Then Aiden told them he heard from his sister they came to check out on him at his home, and their reply to him was 'yes'.
And Aiden was just like, 'Thank you for checking out on me', and they were like, 'What are friends for? We know you'll do the same if we were in your condition'.
Then Oliver was like, "We were so worried, we weren't even sure if you were alive or not".
"I was alive, but I went through a lot, I was frustrated, and I was tied to a chair for days".
..And that's where Aiden stopped, he didn't tell them how he almost died in the hands of the assassins 'cause they definitely planned on killing him.
He didn't tell them how he made use of the system's skills to defend himself. He can never tell them that, they weren't aware of his system, and they'd be really confused.