1. This series is currently the author’s longest running yet by volume.
2. Having chapter_name(1) means chapter_name(52) is a possibility.
3. This is romcom, so who cares about the “battle” (it ain’t a battle manga!). Story can continue with the idiots being each other, e.g., I can see the mayhem when they talk to the parents on their current situation, heck throw all the families together.
What I’m trying to say is, if this is heading towards a conclusion, it’s about on par for the author considering the length. However, for all we know this is the “last” because after this Mirika would be cajoling to join the group and Hiroyuki end up doubling his previous series’ volume count. /shrug