Investigation

Investigation is the fifty-seventh chapter of The Rising of the Shield Hero manga adaptation.

Synopsis
Fitoria has arrived to clash with the giant Spirit Tortoise. In order to stop the Spirit Tortoise for good Naofumi and the allied forces must journey into the Spirit Tortoise to find who is responsible for corrupting the guardian beast.

Summary
Fitoria has finally arrived and is able to fight on equal terms with the Spirit Tortoise. However, she is not able to defeat it by herself. Naofumi and the allied forces need to enter the Spirit Tortoise to defeat it for good.

Fitoria transforms her tank into a transport to the back of the Spirit Tortoise. Naofumi and his party, Queen Melromarc and some of the allied force enters the transport carriage to the Tortoise's back. Meanwhile, Castle Town is still evacuating for the attack.

When the Spirit Tortoise attack team reaches the back, they are greeted by Shadows who lead them to a passage into the Spirit Tortoise. The Shadows also give Naofumi hints from the surrounding town on how to defeat the Spirit Tortoise.

When inside the tortoise, the attack team splits up to try a way to stop the Spirit Tortoise. Naofumi's team finds a group of adventurers lost in the tunnels. Due to Raphtalia's proficiency in illusion magic, she is able to reveal that the adventurers are in fact L'Arc, Therese, and Glass.

Characters

 * Ost Horai
 * Eclair Seaetto
 * Rishia Ivyred
 * Naofumi Iwatani
 * Raphtalia
 * Filo
 * Elrasla Ragnarok
 * Fitoria
 * Mirellia Q Melromarc
 * Queen's Shadow
 * Magic Shop Owner
 * Medicinal Shop Owner
 * Erhard
 * L'Arc Berg
 * Therese Alexanderite
 * Glass

Monsters

 * Filolial
 * Spirit Tortoise
 * Mimic Type Familiar

Weapons

 * Legendary Shield
 * Soul Eater Shield
 * Vassal Fan
 * Vassal Scythe

Locations

 * Reiki
 * Melromarc
 * Castle Town

Differences from Light Novel
Information to be added later on.

Trivia
Information to be added later on.