Stone of Vow and Contract of Promise

Seanlu's face turned serious when he heard Edgar's question."Yes, boss! It is included in the law, so PHA has to carry it out. The law states that every hyperbeing must use a stone of vow or contract of promise to state their obligation. We all thought before that it was just a ritual for every new hyperbeing, but it is actually a way to compel the hyperbeings. The law did not state clearly the stone of vow and contract of promise, so the truth has been hidden for a long time."

The stone of vow originated from elves.

The first to discover the gate of inheritance was, unfortunately, a group led by a descendant of a famous family that belonged to a world-top company. The descendant failed to pass the trial because of a lack of preparation, but he was able to learn meditation and aura techniques.