It's not an extension of the Imp stories, no, but set in the same...Solar System if you like.
Bit of thingy here:
Most of these books are set in a place called Muldrum. Muldrum is made up of 7 different planets/worlds:
- Escalote
- Neuropia
- San Breano
- Klomar
- Aluirian
- Quymaj
- Lehgard
Each world is different to the others. For example, Klomar is in a state of permanent winter, San Breano is one big desert, and Lehgard is a giant jungle. Quymaj was once very industrial, like one big machine but is now radioactive wasteland, Neuropia is a giant sea with lots of islands, and Aluirian and Escalote are most like our own world, except fantasy worlds (Escalote is more like the fairy tale version).
The Imp books and the ones concerning the Prophet Lenny take place on Escalote, this book takes place in the Dream-world of Quymaj.
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I think I musta been playing a lot of Kingdom Hearts before my dream that started this. If you look at the Basic Heartless (soldiers I think they are...), and then my drawings and the description, you see a lot of similarities. Especially with those shown in the "Another Side, Another Story" video.
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And yes, I do have very clear dreams. For the past year and a half or so, my dreams have been extremely clear. I can probably guess why, but I'm not telling.

I can usually remember dreams for a week or two normally, but if they're really good I never forget them. The majority of my Muldrum things I'm writing are based on such dreams (about 16 or 17 out of 21 ain't bad), including this and my latest idea.