There is never pure sin because there is never pure holiness. Sharing souls, killing each other. The most brutal competition between the closest people. The final outcome is tragic. Who can be whose salvation? ... Well, it's just an imaginary history. There were two empires, the Eastern and Western Empires. The Western Empire was equivalent to Europe, and the Eastern Empire was equivalent to China. It is a conflict between two countries, a conflict between two countries and the church. Then... The male and female protagonists are not lovers, so... It is equivalent to CP stew. Whichever pair you want is fine. Then, I will try my best to write it as luxurious... Luxurious. As for the architecture, religion, food, etc., They are all made up at random. I will take out the customs from medieval Europe, the Victorian period, the Elizabethan period... I don't understand... And piece it together. The textual research party must not watch it! Then there are the "Seven Deadly Sins", "Lucifer", and "Michael". These are just code names. Well, the main thing is to express the differences between East and West beautifully.