In a world powered by advanced technology, crime and violence sweep through the archipelagic nation of Cremona (inspired by the real city of Cremona in Italy, and other cities of Lombardy such as Milan). Chief among the major players is "Killer B", a vigilante serial killer who has thrown the city into chaos. The stories of the protagonist Koku; Keith Flick, a legendary investigator of the Royal Investigation Service (RIS); and a mysterious criminal organization intertwine on the path to reach their objectives.

1-01. Split-B
1-02. Havoc
1-03. Lily
1-04. Prickle
1-05. Dreamy
1-06. Puzzle
1-07. Reason
1-08. Craziness
1-09. To Be Buried In Grief
1-10. Waiting There For You
1-11. Easygoing
1-12. An Indelible Sin
1-13. Scream
1-14. The Voice Of The Wind
1-15. Gusty
1-16. Chasing Ghosts
1-17. The Spirits Of The Dead
1-18. Honesty
1-19. Hide Away
1-20. Spiral Of Confusion
1-21. Suddenly A Voice Was Heard
1-22. Darkness
1-23. She Walked Around
1-24. Endless Nightmare
1-25. The Beginning Of Madness
1-26. Temple
1-27. Rendezvous
1-28. Remember Me
1-29. Memories
1-30. Winter I

2-01. Winter II
2-02. Burning Pain
2-03. Flame
2-04. Koku
2-05. Children's Elegy
2-06. Wake Up
2-07. When The Ceiling Speaks
2-08. After Him?
2-09. Diner
2-10. The Beginning
2-11. Shake
2-12. Reversal
2-13. Against Time
2-14. Psychological
2-15. Deporter
2-16. Take Revenge
2-17. Make Up For Lost Time
2-18. Answer
2-19. Eye
2-20. High Altitude
2-21. Bones In Agony
2-22. A Substitute
2-23. Blow
2-24. Unveiling Of The Last Truth
2-25. Sweet Fragments Of Peace