Power - up system. Most of these novels have a system where the main character can continuously increase their power, like in 'Solo Leveling' where the protagonist levels up. This gives a sense of progression and excitement.
Novels similar to 'Solo Leveling' typically have an element of the underdog rising. The protagonist is often underestimated at first but then surprises everyone with their rapid growth in power. There's also a prevalence of a unique world - setting, whether it's a fantasy realm with magic and monsters or a post - apocalyptic world with new rules. These novels also tend to have a large cast of supporting characters that interact with the main character and help or hinder their journey to power. Additionally, the plot usually revolves around the main character's quest for power, revenge, or to save the world. For example, in 'The Beginning After the End', the protagonist is reincarnated into a new world and has to start from scratch but eventually becomes a powerful force in that world. The story is filled with his training, battles, and interactions with other characters which are all hallmarks of novels like 'Solo Leveling'.
Sure was! Solo Leveling began as a novel and gained popularity, which led to its adaptation into various mediums. The novel laid the foundation for the story and characters that fans came to love.