I Was Mistaken as a Great War Commander - Chapter 38

A series of short stories in the world of Toaru Majutsu no Index organized into chapters featuring Kanzaki Kaori as the protagonist, going around the world and space doing missions for the Church of Necessary Evil, however, there is more than meets the eye as each incident is connected.

One chapter was bundled with each limited edition release of the Toaru Kagaku no Railgun anime DVD and BDs, with all of them together being equivalent to a single normal Toaru Majutsu no Index volume

This is a great era belonging to the giant ship galaxy. The multiverse is shattered, and endless fragments of space and land are scattered in the void, turning into an endless sea of ​​broken stars.

Immortal Taoist soldiers, mechanical gods, golden giants, wizard masters…

Countless strange civilizations.

Star sea strange objects, genetic medicine, exogenous armor, floating land origin…

Rare treasures can be found everywhere.

Nether energy shuttle, Nether energy airship, Nether energy airship, frigate, battleship, Star Destroyer, superdimensional mothership…

A fireship with distinct layers.

Across the sea of ​​​​stars, we start from the fire of human civilization.

- Description from novelbuddy

Just like how everyone adored heroes in their childhood, a certain young man adored those powers hidden in shadows. After hiding his strength and living the mediocre life of a mob character by day while undergoing frenzied training by night, he finally reincarnates into a different world and gains ultimate power. The young man who is only playing at being a power in the shadows, his misunderstanding subordinates, and a giant organization in the shadows that gets trampled…. This is the story of a young boy who had adored powers in shadows possibly eventually reigning over the world of shadows in another world.

Su Bai wakes up and finds that the world has changed drastically. He realizes he has come to a world of pets. After accepting the new setting, he is determined to become a powerful Pet Tamer.