Reddit mentions of Ascendance of a Bookworm: Part 1 Volume 1 (Ascendance of a Bookworm (light novel))

Links to pre-order:

• Volume 1 (September 3)
  
• Volume 2 (November 5)

I think if you fiddle with things you can get it without premium, although I will admit I'm not completely sure on how so I'm sorry if I'm wrong.

And yes, they do release physical copies for several series including Bookworm: [1] (https://www.amazon.com/Ascendance-Bookworm-Part-light-novel/dp/1718356005/ref=sr_1_8?keywords=Miya+Kazuki&qid=1567447326&s=gateway&sr=8-8) [2] (https://www.amazon.com/Ascendance-Bookworm-Part-light-novel/dp/1718356013/ref=tmm_pap_swatch_0?_encoding=UTF8&qid=1567447326&sr=8-5) [3] (https://www.amazon.com/Ascendance-Bookworm-Part-light-novel/dp/1718356021/ref=tmm_pap_swatch_0?_encoding=UTF8&qid=1567447326&sr=8-2) [4] (https://www.amazon.com/Ascendance-Bookworm-Part-light-novel/dp/171835603X/ref=sr_1_4?keywords=Miya+Kazuki&qid=1567447326&s=gateway&sr=8-4) [5] (https://www.amazon.com/Ascendance-Bookworm-Part-2/dp/1718356048/ref=sr_1_1?keywords=Miya+Kazuki&qid=1567447326&s=gateway&sr=8-1)

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Edit: Maybe look at kobo? It says the format is EPUB3 (Adobe DRM) and You can read this item using any of the following Kobo apps and devices: [DESKTOP] [eREADERS] [IOS] [ANDROID] [TABLETS] [WINDOWS]

Like /u/minezum said, JNC already started releasing their own physicals of popular titles.

Unfortunately the physicals are not (yet) listed on their website, but currently they're releasing

"If It's for My Daughter, I'd Even Defeat a Demon Lord" , "In Another World With my Smartphone", " How to NOT summon a demon lord" and many more titles

Bookworm is coming out in September

Keep in mind that they don't release every single title in physical format