DESCRIPTION
Context: KAITO and MEIKO do not officially have surnames, unlike other vocaloids (ex. Hatsune Miku, Megurine Luka, Kagamine Rin/Len).
However, some fans give them last names: Kaito “Shion” and “Sakine” Meiko (a teenage version of Meiko). Regardless, they do not have last names. :’)