しろくまカフェ Vol 1: Absolute Beginner Book Club

[OwLorenz]

@Radish8

eBook Japan
This site frequently puts multiple volumes of a series up for free for a limited time, so you can try things out without committing to a purchase - the time limit may prove motivational
There’s a great JapaneseAmmo article which guides you through how to use the site. Note that they don’t show the tax until checkout.

I bought しろくまカフェ on eBookJapan and I was able to do so thanks to this article so this might work for you too