Leonel gave himself three days. Being caught off guard didn't mean that he had to completely fly in blind.
He arranged everything he could first, giving Anastasia an action plan for moving forward. He hoped that by the time he returned from the Idol Battlefield, he would already be at a point where he would have a real army to lead.
With Anastasia's abilities, he believed that it would happen.
He also couldn't leave his brothers behind, nor his Generals. Despite how dangerous the Idol Battlefield would be, especially while they were still working on returning to the Ninth Dimension after being suppressed back down to the Third, it was a necessary danger.
Leonel wouldn't be able to do what came in the future alone. If not for the fact Aina was pregnant, he would take her along as well. The best way for his wife to protect herself would be to be strong as well.
