Chrysalis

Twelve years ago, the gateway to another world suddenly appeared
and two mysterious beasts of astonishing power awoke! The beasts appeared
to destroy each other, leaving behind only a myriad of unanswered questions
and the inexplicable Pillar of Darkness.

Now, the twin children of two scientists who disappeared on that so-called
Day of Conjunction set forth on a hazardous quest in search of their lost
parents. Boarding a phantom subway, Ai and Yu travel to Wonderland, a chaotic
world of amazing beauty and thrilling danger. Accompanied by Lisa, an enigmatic
woman they meet on the train, and Kaze, a brooding stranger with a
demon-summoning gun, the twins begin an incredible journey that will lead
to the mysterious heart of Wonderland.