"Vilserio" is a greeting used in Rughzenhaide.
Vilserio is an incredibly old word, so its origins are uncertain.
The Rughzenhaide accent pronounces it as "Vilserio", but those in Ritona's ancestral homeland, Vhastoralkat, pronounce it as "Villseriol".
Furthermore, differences in region and age create different pronunciations.
※Vhastoralkat is an allied nation adjacent to Rughzenhaide
Expressions such as "Ista" and "Istariana" raise the level of formality.
In Sanne'Ajrizdan, "Ista" and "Istariana" are used in the start of sentences.