The Rising of the Shield Hero manga volume 13 features story by Aneko Yusagi and art by Aiya Kyu.

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?!

The Rising of the Shield Hero manga volume 14 features story by Aneko Yusagi and art by Aiya Kyu.

A mysterious woman named Ost appears and identifies herself as a familiar of the Spirit Tortoise. With her help, Naofumi and the others begin the desperate battle to seal away the Spirit Tortoise once again.

The Rising of the Shield Hero manga volume 15 features story by Aneko Yusagi and art by Aiya Kyu.

The long-awaited climax of the battle against the Spirit Tortoise has arrived! With Ost’s guidance, Naofumi and the others have descended deep into the Spirit Tortoise’s body to face off against the mastermind behind it all. But will unexpected guests interfere?

The Rising of the Shield Hero manga volume 16 features story by Aneko Yusagi and art by Aiya Kyu.

Will the Shield Hero have to rise up from level one all over again!? Naofumi tumbles into a whole different fantasy world after chasing Kyo, the perpetrator of the Tortoise Spirit battle. Separated from Raphtalia and Filo, Naofumi has only Rishia at his side—and finds that his stats are reset to level 1! Forced to attempt a jailbreak, Naofumi encounters a mysterious girl that claims to be one of the four holy heroes. Is she friend, or foe?