User blog comment:Hitsuji Mamoru/Servant Creation Room 2 : Guess of the Who/@comment-28209103-20170725160621/@comment-28209103-20170725200710

He knows his geography and astrology pretty well.

here's extra hint, his 2nd skill function like expanded HF Hassan Library of Stored Knowledge combined with Emperor prerogative, however the knowledge are not his rather he borrowed the wisdom from a lot of people wiser than he is. In practice it's capable of giving him skill that came from knowledge and expertise  from military tactics to surgical skill, to thaurmathology, however at best it'll be rank B in proficiency for him and usually it's worse cuz he's what he received is only the knowledge. Skill that requires natural talent like Charisma or Instict cannot be acquired.

Just like other Ruler he also at one point get in contact with the gaia,, or maybe something like Gaia,, or rather it's closer to something that Madame Blavatsky heard in nature. however he's not a saint so all he did is to take note of it.