1. Vol.1 Chapter 1: earth
Free2. Vol.1 Chapter 2: mars
Free3. Vol.1 Chapter 3: venus
Free4. Vol.1 Chapter 4: "inside"
Free5. Vol.1 Chapter 5: dreaming inside a box
Free6. Vol.1 Chapter 6: mercury
Free7. Vol.1 Chapter 7: hope for the future
Free8. Vol.1 Chapter 8: pluto
Free9. Vol.1 Chapter 9: planets don't waver
Free10. Vol.2 Chapter 10: moon
Free11. Vol.2 Chapter 11: how things work
Free12. Vol.2 Chapter 12: jupiter
Free13. Vol.2 Chapter 13: saturn
Free14. Vol.2 Chapter 14: planets don't worry
Free15. Vol.2 Chapter 15: s-zawa's messages
Free16. Vol.2 Chapter 16: uranus
Free17. Vol.2 Chapter 17: question
Free18. Vol.2 Chapter 18: answer
Free19. Vol.3 Chapter 19: heart of ice
Free20. Vol.3 Chapter 20: the stuffy elite
Free21. Vol.3 Chapter 21: infinity and dimensions
Free22. Vol.3 Chapter 22: spacetime and fiction
Free23. Vol.3 Chapter 23: the ninth visitor
Free24. Vol.3 Chapter 24: 3-mitsu sasa
Free25. Vol.3 Chapter 25: true identity
Free26. Vol.3 Chapter 26: the absolute king
Free27. Vol.3 Chapter 27: sun
Free28. Vol.3 Chapter 28: warning
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