An ordinary notebook records the relationships between several people. A notebook from a boy's youth unexpectedly holds the secret to another world. The boy is used to being alone, but he accidentally makes a friend. How will he treat this friend?
As he gets to know her, he becomes more and more eager to meet her in person. But when they finally meet, the detective hides her away.
He wants his rival's friend for himself, too.
He thought it was possessiveness, but it turned out to be the tenderness hidden deep in his heart.
Theme: Secrets can be seen
