In my opinion, it is. The light novel does a wonderful job of gradually revealing the lore and backstory of the world Rimuru finds himself in. The relationships between the various races and characters are complex and interesting, adding depth to the overall narrative. Also, the evolution of Rimuru's powers is exciting to follow.
Yes, it's definitely worth reading. It has an engaging story with a unique concept of reincarnation. The characters are well - developed and the world - building is quite fascinating. There are many exciting plot twists and turns that keep you hooked from start to finish.
Well, it depends on your taste. If you like isekai (another world) genre, then it's a great pick. It combines elements of adventure, fantasy, and some strategy as the main character, Rimuru, has to navigate his new world. However, if you're not into long - winded fantasy novels, you might find it a bit much.