Manga Volume 13

This is the thirteenth volume of The Rising of the Shield Hero manga adaptation. It's available for purchase both physically and digitally.

Synopsis
It turns out the mysterious monsters that Naofumi and crew were asked to take care of can be traced back to the legendary beast known as the Spirit Tortoise. Meanwhile, the other three heroes have disappeared. What could they be up to?

And what will the Spirit Tortoise do next?!

Chapters

 * Chapter 49: "Outwit"
 * Chapter 50: "The Beginning"
 * Chapter 51: "Spirit Tortoise"
 * Chapter 52: "The Country on Top of the Spirit Tortoise"
 * Chapter 53: "The Spirit Tortoise's Familiar (Human Form)"