A bored Rimuru Tempest accompanies Diablo when he goes to meet with an old friend in the Netherworld. What will happen when he meets an out-of-place human boy who piques his interest? (Tensei Shitara Slime Datta Ken and Mairimashita Iruma-kun crossover)

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!

Warning‼️ This Fanfic will follow the Light novel, ONLY SOME of the scene will be canon. So if you have never read the novel, please be aware of major spoilers along the way. I warned you. Well, this is basically the timeline of the series Tensei Shitara Slime Datta Ken, but with Kiyotaka and Rimuru as the Mc. How would Kiyotaka live from now on as he is transported in another world.... as a slime? I swear there's no originality in the skills and ability. But hope you enjoy it! I'll try posting a chapter every other day. But since I'm lazy af, don't expect too much of me. I do not own Classroom of the Elite & That Time I got Reincarnated as a Slime. Credits to their respective authors Shougo Kinugasa and Fuse. And also to their illustrators Tomose Shunsaku and Mitz Vah.