Manga Volume 10

 is the tenth volume of the manga adaptation of That Time I Got Reincarnated as a Slime.

Synopsis
SCHOOL OF HARD KNOCKS

Over the course of his new life as a slime, Rimuru has overcome many trials and tribulations--aggressive neighbors, treacherous plots, deadly beasts--to build his very own nation of monsters. For a change of pace, he's decided to engage in a diplomatic tour of the nearby human kingdoms, where he might have found his most challenging adversary yet: a classroom of rowdy children! Can he live up to the memory of his long-lost friend Shizu by taking care of her former pupils?

Chapters

 * Chapter 44: In the Kingdom of Blumund (Part One)
 * Chapter 45: In the Kingdom of Blumund (Part Two)
 * Chapter 46: Yuuki Kagurazaka
 * Chapter 47: Failed Heroes

Bonus Short Story:
 * Veldora's Slime Observation Journal: Adventure