Direct quote
“It was my first game that made it to release, so I have a lot of memories. It's my cute boy in that sense.”
What it documents
Asked whether he was satisfied with Metal Gear for the MSX, Kojima said it was his first game to be released and that it brings him many memories, describing it as his cute boy in that sense, a Japanese expression equivalent to calling something one’s first son. He added he was only a rookie in the industry then, and the programmers and the sound designer were more experienced than he was, so he is not sure he was able to utilize them to the fullest extent and therefore was not one hundred percent satisfied.
Source
Gamers Today, interview with Hideo Kojima (undated page, retrieved from web.archive.org). View source ↗
“I was only a rookie in the industry back then, and the programmers and sound designer were more experienced than I was. I'm not sure that I was able to utilize them to the fullest extent.”