This task was passed on to Milena, who understood why Kayden was doing this and took on this goal zealously. Kayden had no intention of being a present father; he would use these children.
"Kayden," Felix appeared on his shoulder as soon as he left the room. "I have an idea," said the cat, and Kayden waited. "A gigantic sequence of runes capable of isolating this entire city from moths. This will allow me to pass the level." The feline was obsessed with increasing his strength.
With this goal in mind, he studied camouflage runes all the previous years. His idea was not baseless and he showed Kayden several methods they could use to plug the city into a blind spot in the general mana flow.
Furthermore, he brought an artifact capable of rendering any being below the fourth realm invisible in its mana expenditure. Unfortunately, Kayden didn't have or know anyone capable of making this artifact at the moment.