Demon Slayer: Time Travel Begins with King Pesticide

System + Pillar + Fandom The loser male protagonist and his best friend stayed up late playing games. They accidentally traveled through the world of Demon Slayer and awakened the super system. They were promoted from ordinary swordsmen to pillars, and then embarked on a cheating life. This is a Demon Slayer fan work. It has certain origins from the original work. Please understand that there is no sword, not even a single sword! ! Everyone in the column survives This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.