It seems Debris is done with his normal series. Oh well, maybe someday he will return to it in some form. For now, here is his new series, sister-senki in collaboration with another creator on pixiv. There's also special guests near the beginning.

Artist - Debris デブリ

pixiv: https://www.pixiv.net/en/users/44328543

twitter: https://twitter.com/inqf8ru90nc9

https://robypoo.blogspot.com/ for updates

vol. I: here
vol. II: https://e-hentai.org/g/2728475/fc768f273c/
vol. III: https://e-hentai.org/g/2770817/64f9db2dfc/
vol. IV: https://e-hentai.org/g/2770819/475fc1d1d9/

Original Series from the beginning: https://e-hentai.org/g/1789846/34b92c93cb

https://e-hentai.org/s/a4ba76eb50/2699674-701 The character on the far left, B (or Bea), belongs to C-Adv (https://e-hentai.org/s/c1b3d5ea73/2552308-2)

https://e-hentai.org/s/a4ba76eb50/2699674-701 - The character 3rd from the left, Rena, belongs to Yamachan (https://e-hentai.org/s/be8f4fd5f4/2782307-766)