Idaten has the reproductive organs but they're pretty much nonfunctioning just like all the other organs. If they don't need eyes to see, pretty sure they can't reproduce.
Looks like this won't be a multigenerational story after all, as I expected it to never be.
The artist must finish the story while Alan is still alive.
The manga really portrays Beryl as super swordsman several levels above the others. In the anime, which should be based on the novel, Beryl was quite overwhelmed by Aleucia and had to resort to dirty trick to win.
Every arc is always about evacuating citizens then battling the monster, but author managed to keep things interesting by changing the setting. From cruise ship, urban housing, coastal disaster, and now snowy mountain.