In order to lessen the casualties that might happen within the Arzotoc's villagers. Riku decided to leave in this place with Emma to deal with the remaining attackers.
If you take a look at it, it was possible for both of them to win in this fight. Why? They thought Riku has no right amount of magical power that could stand against a single attacker. To be exact, each attacker already surpassed that Riku had.
However, he had a plan to win against them. "Emma, are you ready? We'll drop to the surface, Okay?" He asked her nonchalantly you could not see that he was bothered with the current number of attackers.
To determine the exact numbers of the attackers, it was around one hundred fifty or higher than that. Well, with that number, the attackers were still able to wipe the seventy percent of the villagers.