Daan Arthaakogaan (the Adventure)

This book is about a boy and girl who grow close with each other and a teacher of their's. They set off on lots of small adventures, when one day something happens. The events change some but eventually go back to normal until the end of the story. They go on a long adventure to a far away land, and end out meeting one of the main characters family. They get to even closer, and end out staying for a few weeks. Soon something drastic happens and the whole story is flipped. You start seeing it from the second persons point of view instead of just the main characters. Then at the ending everything goes back to being just fine and though everything has changed everybody is still okay.