In the graveyard where the demons were entombed in his world, Kai finds a girl whom he cannot identify as any of the known races. When she asks him for help, he doesn't hesitate for long. After freeing her from her chains, mysterious things happen again.
there is a private underground train line 
that the royal family used to use as refuge.
هناك سكّة قطار خاصّة تحت الأرض
كانت العائلة الملكيّة تسلكها كملجأ
sous le palais gouvernemental
qui servait à évacuer la famille royale.
c'è una linea ferroviaria privata
che la famiglia reale usava come via di fuga.
temos uma linha de trem subterrânea privada
que a família real usava como rota de fuga.
есть подземный тоннель
для эвакуации королевской семьи.