I couldn’t verify a reliable, up-to-date method for getting Naoya in Cursed Tower Defense from the results I found, so I don’t want to guess and give you bad steps. The clearest lead is a general “how to get every unit” guide for the game, which suggests the method may be covered in a broader unit guide rather than a Naoya-specific page.

What the current results suggest

  • Naoya is mentioned in Cursed Tower Defense content as a useful starter unit, but not with a confirmed unlock path in the available results.
  • The search results point more toward gameplay guides and showcase videos than an official unit wiki entry for Naoya in Cursed Tower Defense.
  • I did find Naoya-related Roblox/JJK content, but it appears to be for other games or concepts, not a confirmed Cursed Tower Defense unlock guide.

Best next step

The most likely sources for the exact unlock method are:

  • An in-game unit shop or summon/craft menu.
  • A broader “every unit” guide video for Cursed Tower Defense.
  • Community discussion or a dedicated wiki page if one exists later than the results I found.

TL;DR

I can’t confirm the exact way to get Naoya in Cursed Tower Defense from the available sources, but the strongest lead is a full unit guide for the game rather than a Naoya-specific post.