イデア

This guy, by virtue of his own curiosity, looking for interesting and unusual stuff on the expanse of the world. And a fate brought him to Caro. Of course, Ideas became interested in the mysterious sword that Prir can extract from her own body. He decided to temporarily join the company of Caro, Arcie and Prir, and even trained Caro's sword skills. Despite this, Ideas looks very suspicious, and you can't shake the feeling that he's not as innocent as it seems.