Responses
つづく (tsudzuku) means "continues", so, yes. These were the first 4 chapters compiled into volume one. We haven't gotten anything new since april of this year.
The web novel isn't translated, but you can read it here;
https://novel18.syosetu.com/n0449go/
For chapter updates, check here:
https://comic.pixiv.net/works/11313?srsltid=AfmBOorvgcXdME5r9RZVydNS7eXOuXTl65xqeos9Onmh95RWalOHuMmQ
At the end of chapter 6 there are 3 characters at the bottom of the page, つづく. If I'm not mistaken, it basically means "to be continued". I believe it's just volume 1. I also believe there's a novel as well but it hasn't been translated. I'm almost sure I saw it at one point.
If anyone has more information or if I'm wrong, please correct me :3