Cayna and Mai-Mai reunite for the first time after 200 years. Cayna was searching for the remaining Guardian Towers her gamer friends left behind but was not able to get any more information from Mai-Mai, who is the headmaster at the Royal Academy. Cayna continues her activities as an adventurer to try to gain more information and takes on a quest to take care of a supposed ghost that appears at the colosseum and...

Cayna awakens with a hangover in a village out in the middle of nowhere. While she's dealing with a headache, she hears people talking about hearing singing coming from a well. In order to find out what's causing it, Cayna summons a flying fish and dives into the well. When she gets down there, she discovers a massive underground cavern. And what she finds down there is...