Star Wars Junior Jedi Knights

Star Wars Junior Jedi Knights is a series of young adult novels set in the Star Wars universe. The series includes the books Anakin's Quest, Kenobi's Blade, Lyric's World, Promises, The Golden Globe, and Vader's Fortress.
The series follows the adventures of Jacen and Jaina Solo, the children of Han Solo and Princess Leia, as they train to become Jedi Knights. In Anakin's Quest, they travel to the planet Yavin 4 and encounter an evil being who threatens the Jedi Order.
In Kenobi's Blade, the twins are sent to the planet Melida/Daan to resolve a conflict between two warring factions. In Lyric's World, they investigate a planet where the inhabitants are mysteriously disappearing.
In Promises, the twins discover a plot to overthrow the New Republic government, and in The Golden Globe, they search for a legendary treasure that could save their family from financial ruin. Finally, in Vader's Fortress, the twins encounter the remnants of the Empire and confront their grandfather, Darth Vader.