This Guy Is Not Easy to Mess With

In the world of warriors, force is the most important thing, which is a bit funny. The three little ones get into trouble constantly, and then everything completely changes from setting fire to the mountain. The three little ones escape under the desperate leadership of their mentor, but they are scattered all over the place. The protagonist wanders alone and embarks on arduous training alone. With a book of basic martial arts brought from the mentor, he forcibly carves out a path of his own. What will the three little ones look like when they get together again.