I just found out there is a spin off manga 86 Eightysix operation

86: Operation High School] : r/EightySix

86 - Baka-Updates Manga

86 Manga FAQs : r/EightySix

86 -Eightysix

86 (novel series) - Wikiwand

Vladilena Milizé Daily💫 on X: Gorgeous🤍🙌 ✨~Manga spin off: 86

I just found out there is a spin off manga 86 Eightysix operation

86: Anime review & thoughts - Geeky Travels & Fandoms

» Archive » 86 Eighty Six ends its operational pause

Operation High-School Manga Volume 2, 86 - Eighty Six - Wiki