That Time I Got Reincarnated as a Slime, (Light Novel) Vol. 10

The Tempest Founder’s Festival was a roaring success, and after working out a few kinks, the Advanced Dungeon is proving to be a major Tempest tourist attraction. Now Rimuru’s next objective is to join the infamous Council of the West—however, a certain influential figure working from the shadows of the Council has no intention of allowing someone as powerful as Rimuru to take a seat at the table, and she will stop at nothing to quietly snuff him out before he makes any moves!