Rimuru is obviously the most important. He drives the story forward with his growth and decisions. Then there are his subordinates. Benimaru, a powerful ogre, is one of them. He is loyal to Rimuru and helps in battles and in governing the community. There is also Diablo, a powerful demon. He serves Rimuru and his presence adds a sense of mystery and power to Rimuru's group. And of course, the various monsters and humans that Rimuru interacts with throughout the story all contribute to the richness of the character landscape.
One of the important characters is Shizu. She has a connection to Rimuru's past life. Rimuru himself is the central character. He is a slime with a human mind, which makes his character very interesting. There are also demon lords like Milim Nava. She is a powerful and somewhat unpredictable character. Her interactions with Rimuru add a lot of flavor to the story. There are also the dwarves, like Kaijin, who play important roles in Rimuru's development, for example in helping him with creating his town.
Chapter 282, "Whereabouts Unknown", is the clearest early answer because it turns Jiang Yan's situation into a concrete plot event. It opens with The other villagers quickly heard the commotion and hurried over. and closes on Why isn't there a live broadcast reporting on their itinerary?]....
Chapter 239, "Although he's cheap, he's also stupid", is the clearest early answer because it turns Flash Change's situation into a concrete plot event. A useful checkpoint is the way the scene starts with I can't believe it, I thought the live broadcast was over, but here's...
Chapter 625, "An Anonymous Corpse Found in the Wilderness?!", is the clearest early answer because it turns Wilderness's situation into a concrete plot event. It opens with After several days of storms, Dragon Ridge Island finally welcomed a...
Chapter 581, "Where is everyone? Where have they all gone?!", is the clearest early answer because it turns Team's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Inside the tent, no one felt like sleeping.
Chapter 635, "Forced Return to the Time-Space Administration", is the clearest early answer because it pushes Time Criminal Bureau into a new phase or setting.
Chapter 311, "Signed Jiang Yan", is the clearest early answer because it turns Jiang Yan's situation into a concrete plot event. The chapter turns that into something concrete by moving from Shen Lan knocked on the door before entering when Jiang Li was...
Chapter 442, "Let's Form an Alliance", is the clearest early answer because a shaky connection becomes usable in the plot. It opens with Chang Rong was bewildered, "So, she seems pretty impressive." More... and closes on After all, this had never happened before..
Chapter 804, "Still causing trouble?", is the clearest early answer because it turns Jiang Buchen's situation into a concrete plot event. It opens with He never imagined he would be scooped up like this! and closes on Upon seeing the indifferent expression in Jiang Li's eyes, he became....
Chapter 496, "Hot Pot Tonight!", is the clearest early answer because it turns Dean Yu's situation into a concrete plot event. A useful checkpoint is the way the scene starts with This woman is way too fierce, yelling at our Wenwen like that."...
Chapter 396, "The Shang Family Now Follows My Orders", is the clearest early answer because it turns Jiang Cheng's situation into a concrete plot event. Early on, Doomsday Beehive" featured a male supporting character who was.... By the end, It seems she was truly out of options..