Is it possible to rent camping tent in the Iya Valley or Yagen Valley, Japan?

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I'm thinking about spending couple of days hiking in Iya Valley, Shikoku or Yagen Valley, Honshu.
I've read that there are awesome places for camping in which you can have a patch of grass for ¥500. Unfortunately, I won't have any equipment with me so my question is: is it possible to rent a tent in place or somewhere in the nearby cities (better if on the route of a JR train)?
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