Yoshimune (吉宗) is a Japanese anime series produced by AIC Spirits, Ginga-ya, and Gonzo and directed by Hiroaki Sato.
[1] The story is set in a parallel world which combines elements of the Edo period such as samurai and the modern, such as disco halls and motorbikes.
He appears to be a negligent ruler but secretly sneaks out of the castle, donning the alter-ego of Yoshi in order to blend in with the commoners and try to solve their problems.
Most of the time his job entails trying to control Yoshimune's outrageous behavior and he is frequently frustrated by the antics of the other inhabitants of the castle.
Two odd men who like to sit in secret places in the castle and make comments about how "evil" they are.