Frilian: Say Good Morning to the Demon King's Castle

67 Years before the death of the brave Simmel. Fortunately, Ciel became the first human to reach the Demon King's Castle in hundreds of years. But unfortunately, he was caught. "How can demons and humans coexist?" The beautiful devil asked. "It's love." "Only by understanding and possessing love can it be possible for demons and humans to coexist." Ciel replied. So in order to survive, he embarked on an unprecedented and difficult task: Let the devil understand what love is.