As a unique simulation game, Nai’s Training Diary puts the player at the center of a meaningful interactive experience. Instead of focusing on action, this game emphasizes patience and understanding. Why such an experience? Because, in the past, Nai had to go through an extremely painful childhood. Now, when she has the opportunity to escape from suffering, she moves in with the main character. This is truly a once-in-a-lifetime opportunity. So, the player will have to make a choice. Can you make this girl confident again? Can your life and this girl’s life be in harmony?