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)
If you hear the word reincarnation nowadays, it is usually an untrue fairy tale of being transported into a new world and overcoming the greatest evil to bring about a glorious peace. Yet that unrealistic scenery gets pummeled by the extent of reality. A world too cruel where strength was all that mattered and moral...