The protagonist Egami Hisashi is a person who has lost his memory. He and Gu Renqing fast traveled together and traveled to a place called the brand-new world of sea tactics. They went through the level together. It was not until the 17th level that Egami Hisashi knew that this place was a place dedicated to helping people. Where the poor people investigate unjust, false and wrongful cases, those suspects will be sent here to answer questions. It is said that answering questions is just a borrowed knife to kill people. Those who die will be punished, and those who report the crime will sign a secret agreement with the organization, and the agreement will indicate their usefulness. Hisashi Egami is the nephew of the current leader of the organization, and he has lost part of his memory. So after he completed the question, he started the process of searching for memories.
Concept: Man and nature, philosophy and culture, concept of love