While roaming through the riverbank. Tatsumi found a blue stone with an ancient rune engraved on it.

Excited, he showed it to the Chief of the village.

The elderly Chief said with a smile and hearty laugh when seeing the exhilarated look of the boy's expression.

‘‘It says in legend, blue stone with rune engraved on it is a symbol of dream link that connects the person holding it to another person much further and further away from him or her through the process of dream while sleeping.’’

‘‘Though the person would only meet each other in dreams at first, but gradually as their meeting continues to increase through the amount of times they meet. The blue stone would interconnect their fate together, eventually converging and the two people would be able to meet each other in reality.’’