Just like how everyone adored heroes in their childhood, a certain young man adored those powers hidden in shadows. Ninjas, rogues, shadowy mentor types, that sort of deal. 
After hiding his strength and living the mediocre life of a NPC 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 pretending to be a power in the shadows… his subordinates who took him more seriously than he expected… and a giant organization in the shadows that gets accidentally 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.

Read the comic Kage no Jitsuryokusha ni Naritakute! online, along with others like The Beginning After the End, Solo Leveling, Omniscient Reader's Viewpoint, Jujutsu Kaisen, The Greatest Estate Developer, Revenge of the Baskerville Bloodhound, The Swordmaster's Son, After Ten Millennia in Hell, I’m the Max-Level Newbie, My Blasted Reincarnated Life

Action

Adaptation

Comedy

Demons

Drama

Fantasy

Harem

Isekai

Magic

Martial Arts

Reincarnation

School Life

Kage no Jitsuryokusha ni Naritakute!