Rimuru, after successfully repelling Velgrynd, the catastrophic dragon, takes his well-earned break. But, unfortunately, his break gets cut short after Guy had called in for Walpurgis. While preparing for his departure, Rimuru gets attacked when he crosses the teleportation space made by Guy's subordinates. When he comes to, he finds out that he has been brought back to Japan. Albeit, a different Japan from what he knew. This is a crossover between two of my favorite Anime's. This one will be a continuing series just like my first Fanfiction. Stay tuned for more!

What if Iruma got replaced with Nagisa? What if Nagisa was half demon? What if Nagisa' father was Sullivan's biological child making Nagisa his biological grandchild? What would be the story if the silent androgynous assassin was to go to babyls? Find out in "Welcome to demon school! Nagisa-kun" I dont own Assassination classroom and Welcome to demin school! Iruma-kun or any of the images used.

"We had to drug him..." His fuzzy mind couldn't keep up with what those strange people were saying. "We had to use tons of drugs to sedate him!" said one of the strangers, he wanted to open his eyes but they were so heavy, he couldn't even move or talk. 'What are they doing to me?' Killua thought in desperation. "This kid isn't normal, I don't even am sure if he's from here..." continued another stranger. Killua slowly began to open his eyes. Where was he? Who were those people... with capes and strange costumes? "WHAT YOU ARE DOING TO THIS KID IS ILLEGAL! If the police knew, they would probably take your hero license..." Another man tried to explain the group of heroes gathered around the hospital bed. "We only want to know if he is dangerous to society. This kid is a complete mystery" One from the group of heroes explained. Welcome to the nasty part of the hero society. -THE COVER ISN'T MINE- (Credits to the author) All the rights to Yoshihiro Togashi (My first fiction) (Bad grammar...)