Rosa is an unseen character mentioned in the WORLD INSIDE book that came with the 10th Anniversary Box. As a refugee from the former Land of Forests, she met One in the year 1024 and gave birth to his twin children, Gruen and Grenat, in 1025. It is from Grenat's lineage that Ramia is born, who later gives birth to twins Manah and Seere. One seems to be unaware that his bloodline still remains intact through Grenat's descendants.
