"No one under that name?" Yayuka's face twisted into a peculiar expression. Surnames in the Eastern Country are inherently a very chaotic system, with many of them only belonging to one or two families, and some small surnames even disappearing for various reasons every few years.
"Yajima" in itself isn't some historically profound large clan. This surname, symbolizing night and darkness and not even found in the top thousand of the Eastern Country's surname rankings, was very likely conceived under the "Commoners Surname Edict" less than a hundred and fifty years ago, brainstormed by ancestors scratching their heads in the dead of night.
Compared to those large surnames with tens or hundreds of thousands of people, such surnames should have very obvious traces in the family registry files. Basically, as long as one finds a person with the surname Yajima and follows their father's and grandfather's lineage, it should be easy to find others with the same surname.
