Yes, absolutely! I'm all for this. Five is generally a very difficult person to be around and we definitely have a fun window with this tongue-situation that he totally has under control (WRATHION ARE YOU LISTENING). He might form opinions very quickly.

I'd be up for exploring all of this! He's definitely a Hard Mode friend, but he's also very tired. There's always a chance that he catches him at the right time or he picks up how he's just an insane little guy who gets really intense about his math and his family.

Otherwise, look forward to being yelled at and/or grilled for information because this is what he counts as socializing with most people.