Afterschool War Activities is complete (https://vatoto.com/comic/_/comics/afterschool-war-activities-r8789).
See here (I hope that's enough):
- http://myanimelist.net/manga.php?q=Afterschool+War+Activities
- https://www.mangaupdates.com/series.html?id=89141.
I think it's been changed in the past from completed to ongoing, perhaps this could be locked?
Let me know if there's more I should do to help. Thanks.