«Adventure Books for Kids» by Jeff Child

Enjoy the bundle!
Diary 1: The main character is a mysterious figure showing up, spooking people out, planting trees randomly, and building pyramids in inconsistent locations. Discover through this book what he has to say about his reasons for doing so, and find out more about this mysterious being. He loves puzzles, ancient Egyptian buildings, and strange things; he hates the fact that his brother died, and he is a genius beyond any reasoning.
Diary 2: These ninjas are on a mission. They detest the inequality in the lands and decide to do something about it. Providing for the poor and stealing from the rich is their purpose, but they are yet to face a true evil among them - another ninja who stands in their way and seeks nothing else but to destroy these benevolent guys. Follow the diary of the three fighting ninjas who stay in the shadows and become more than just vigilantes. Or are there four ninjas? This story is full of surprises.
Diary 3: The life of Rufus the knight is slow but satisfying until he finds out he could do better. Looking for answers to help him improve his talents, he seeks out the commander of the protecting knight army, who simply asks him if he is ready to face some of the most severe tests in the country. Focused on his goal to become a true hero, Rufus ventures for excellence as he come across mean creatures and vile monsters before he can call himself a Knight of Honor. He has to deal with dangerous crows, slithering snakes, and challenging puzzles. Will he be able to prove himself?