Once the last spaceship from Riga fell from the sky, the captain of the royal guard took care of the clean-up, there were still some corrupted beasts here and there, which needed to be completely eradicated.
Now that there were no aerial threats, the whole fleet landed, after a battle besides taking care of the deceased, the next activity was of course getting the spoils of the war.
Aster wasn't really interested but he also had to get rid of some lose ends, that being said, since Nolan more or less told him about what happened to Valentine and the others, the following wasn't something he wanted Kana to see.
"Mom, Eris please come with me I want to confirm a few things, the others can go if you want… except Kana".