In The Land Of Leadale Vol. 5 (Light Novel)

In Vol. 5, after receiving an urgent message from a former player named Shining Saber warning her of a horde of demons heading toward the royal capital and calling on her to lend her aid, Cayna heads out from her remote village to confront the demon forces. Meanwhile, a Guardian Tower in the form of a gigantic turtle appears, but with Cayna busy elsewhere, it’s up to Exiz and Quirke to deal with it on their own!
Notice: This book is written in Japanese.