Well, 'Solo Levling Light Novel' mainly focuses on a character's journey of solo leveling. In this kind of light novel, you can expect a lot of action - packed scenes. The protagonist usually starts from a relatively weak state and gradually becomes stronger through his own efforts. There might be different power systems, like magic or special abilities, that the character discovers and hones during his leveling process. It also often includes elements of adventure as the character ventures into unknown places in the story world.
I'm not entirely sure without more specific information, but usually in a solo leveling story, the main character is the one going through the solo leveling process. They are often the central focus of the story, with their growth and development being the main plot point.
Luke and Solo were the two main characters in the Star Wars series. They were all heroes of their youth who had experienced many setbacks and growth. Luke longed to fly and escape from the planet that bound him. He planned to join the Imperial Military Academy. Han Solo also yearned for the life of a pilot, and his path also pointed to the Empire. They all wanted to become pilots and draw their own destiny in the starry sky. Luke's performance was relatively gentle, while Han Solo was a hooligan who was the most important to his survival. They had a complicated relationship in the series, sometimes friends, sometimes enemies. The story of Luke and Solo played an important role in the Star Wars series.
One important storyline is Jacen's fall to the dark side. Jaina is deeply affected by this and is involved in the events that unfold as a result. Another is their shared adventures and training as young Jedi. They both face challenges in the context of the galactic conflicts and the internal politics of the Jedi Order.