[ISBG]read chapters 1 to 19 for free on Pixiv. (Patreon)

If you've read chapter 23 but can't remember the characters from the last chapter, you can check out the earlier ones on Pixiv. They're in a low-quality version that skips some stuff. I've got 19 chapters uploaded so far!

https://www.pixiv.net/user/75891135/series/152915