Kirk's Klingon exchange student former-roommate from the Academy. ADF eventually used this idea to pad out "Star Trek Log Seven" (TAS adaptations) to a novel-length story.
Whoa, that was originally an episode idea? Fascinating.[/QUOTE]
Yep. ADF reveals this in the new serialised essay that prefaces the recent trade reprint omnibuses of TAS adaptations. I sent a message to ADF hoping he'd still remember the title of his two-parter script, but he said it was gone from his memory - and his old files.