From the Start as an Uchiha, I Rose to Upper Rank in Demon Slayer

How did I, an Uchiha, end up as an Upper Rank demon in Demon Slayer? And I have to fight in a Replacement Blood Battle from the start? No choice! I'll have to show off with my invincible Mangekyo Sharingan! Isn't it perfectly normal for a ninja to know a few ninja techniques? And a ninja carrying a few ninja tools... that's family tradition! As an Uchiha, using Susanoo... that's all thanks to my sweat and hard work!

Some useless boss: "That uncontrollable subordinate has already fought his way up to Upper Rank One. Have you found the Blue Spider Lily yet?"

Some Butterfly Mansion sisters: "There really are demons who don't eat people. His face under the mask is so handsome. If only his personality were a little more reliable."

Some head of the Ubuyashiki family: "Perhaps the hope of ending Muzan lies among the demons, in the tiger and flying dragon Muzan himself provoked."

Some Number Three: "Fighting! It's awesome!"

The only Demon Slayer player: "No wonder this is a masterpiece that spans the ages, though the campaign is a little long. By the way, I've maxed out my reputation with both the good and evil factions. Why hasn't the final boss appeared yet?"

This novel is also known as: "Giving Demon Slayer a Little Ninja Shock," "This Demon Moon Isn't Very Cold," "The Hardcore Player's Guide to Roleplaying," and "A Hundred Consequences of Installing Mods Randomly."