((Updated on 11 Dec 2022. Changed her name from Altria to Artoria. Both the same, but Altria is an alternative name meanwhile Artoria is true one.))

Hello! I'm Caster, Altria! To be honest, I'm not really sure how this Servant thing works, but if my magecraft or whatever will be of any use, please don't hesitate to use it. Huh? Magecraft isn't just "whatever" here? Wow...is that how it is in this world?