One manga that could be similar is 'The God of High School'. It has action-packed scenes and unique character powers like in Solo Leveling.
You could check out 'Noblesse'. It has a similar vibe with powerful characters and an exciting plot. The way the story progresses and the world-building can give you the same kind of enjoyment as Solo Leveling.
Chapter 152, ", Tribe (7K words, please subscribe!)", is the clearest early answer because it turns Gorgon's situation into a concrete plot event. The chapter gives readers a real answer by opening on If it were usual times, Gorgon wouldn't mind these things, but not... and ending on They had never seen a creature like himself, but once he had regained.... In story terms, the chapter closes with More 6000 words tomorrow!
Chapter 263, "Twenty Years of Hard Work (2)", is the clearest early answer because it turns Gu Hang's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Nes Luman can handle this matter. and follows through with But all he said was, "The leader will understand in time..
Chapter 203, ", The Great Impurity", is the clearest early answer because it turns Benevolent Father's situation into a concrete plot event. The setup is Hearing about the new blood, Matins's heart softened a bit., but the pressure keeps building through But immediately, he returned to his role as a battle commander..
Chapter 229, "th Chapter, The Death of the Military Governor (6k, please subscribe!)", is the clearest early answer because the violence around Kuangya becomes final instead of hypothetical. The chapter turns that into something concrete by moving from But just as Matins was about to strike again, preparing to attempt to... to Turning his head, the old priest looked at Genie Kuangya and raised....
Chapter 215, "This mom is still needed", is the clearest early answer because it turns Heijian Star's situation into a concrete plot event. The chapter turns that into something concrete by moving from Gu Hang's arrival at Rage Owl Star indeed put her mother in a passive... to At this moment, by next year this output might already match one of....
Chapter 166, ", Victory and the Fruits of Victory are Not Always the Same Thing", is the clearest early answer because it turns Gu Hang's situation into a concrete plot event. The chapter gives readers a real answer by opening on This is like asking a friend to give you a lift in a taxi, and then... and ending on Now, what they were discussing was the information soon to be....
Chapter 288, ", The Loyal Grenade Launcher Feels Worth It", is the clearest early answer because it turns Platoon's situation into a concrete plot event. A useful checkpoint is the way the scene starts with The battle had reached an incredibly intense state. and follows through with The metal shield in front of it was severely deformed, its stand was....
Chapter 238, ", 'Unique' upgrade sequence unlocked", is the clearest early answer because Gu Hang finally turns buildup into a real advancement. The chapter turns that into something concrete by moving from To remain human, or to ascend to godhood? to Secondly, even if Gu Hang didn't care about "no longer being me," it.... What makes it stick is that it turns power growth's growth into a concrete upgrade step and sets up the next payoff in the power growth storyline linked to Rage Owl Star.
Chapter 233, ", Roll In", is the clearest early answer because it turns Airborne Division's situation into a concrete plot event. A useful checkpoint is the way the scene starts with But despite all this, after fifteen hours, twenty hours, it... and follows through with The closer to the Chaos Array, the easier it was for Gu Hang to bring....
Chapter 159, ", The Starting Point of the Road to Glory", is the clearest early answer because it turns Green Skin's situation into a concrete plot event. The setup is The proximity firepower of the eleven Green Skin Ships made it very..., but the pressure keeps building through And their counterattack seemed weak and feeble..