In the real world, there is a kind of hidden "heraldic resonance" - these people are born with weak "heraldic marks" hidden in their bodies, which are often manifested as inexplicable sensitivity to certain types of patterns and symbols, or the occasional "precognitive fragments" (fuzzy scene hallucinations), but they do not know the source of the mark. The "Fantasy Game Realm" is not a virtual game, but a "concrete world of rules" parallel to reality. It is constructed by the rules left by the "Heraldry Creator" in ancient times. The core is the "Heraldry Game" - the resonater can enter the Fantasy Game Realm by awakening the imprint in the body, borrowing the power of the coat of arms to complete the "game mission", and at the same time repair the damage to his own imprint.
The fantasy world does not rely on technology. The entrance randomly appears at a location related to the "old heraldry ruins" in reality (carvings in old ancestral halls, patterns in old picture books, brick patterns in old neighborhoods, etc.). Only those who resonate can perceive and enter. Ordinary people cannot detect the existence of the fantasy realm. Even if they are near the entrance, they will be "shielded by the rules" and only feel that the area is inexplicably quiet or familiar.
