I can’t identify the person from that description alone. The most likely candidate is a Japanese manga or light-novel creator who also had an unreleased YouTube-related script or concept, but your wording is too vague to pin down one name. The closest public result I found was general Japanese manga-creator content and a separate “Latent Space” YouTube channel, which does not clearly match a specific writer or unpublished script.

What I need

Please send any one of these:

  • The title of the manga or novel.
  • The YouTube channel or video name.
  • A quote from the script.
  • The character name or story premise.

Best guess range

If you meant a Japanese manga author who also writes novels , possible well-known creators in that space include:

  • manga-turned-novel authors,
  • light-novel writers with manga adaptations,
  • creators who post unrealized scripts or storyboard concepts online.

But I can’t responsibly name one without stronger clues.

Next step

Give me 1–2 more details and I’ll narrow it down fast.