Touhou Chireikiden - Cheating Detective Satori by Akimaki Yuu, Viridiflora, and ZUN Touhou Project Doujin — Ongoing

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Chapter 1: The SDM Case Goes Under the Ground (Pt. I) released Oct 31 '19
Chapter 2: The SDM Case Goes Under the Ground (Pt. II) released Nov 26 '19
Chapter 3: The SDM Case Goes Under the Ground (Pt. III.I) released Dec 31 '19
Chapter 3.5: The SDM Case Goes Under the Ground (Pt. III.2) released Jan 27 '20
Chapter 4: The SDM Case Goes Under the Ground (Pt. IV.I) released Feb 24 '20
Chapter 4.5: The SDM Case Goes Under the Ground (Pt. IV.2) released Mar 30 '20
Chapter 5: Ghostly Friend’s Dream Divination High in Spirits (Pt. I) released May 10 '20
Chapter 6: Ghostly Friend’s Dream Divination High in Spirits (Pt. II) released May 25 '20
Chapter 7: Ghostly Friend’s Dream Divination High in Spirits (Pt. III) released Jun 29 '20
Chapter 8: Ghostly Friend’s Dream Divination High in Spirits (Pt. IV) released Aug 31 '20
Chapter 9: Ghostly Friend’s Dream Divination High in Spirits (Pt. V) released Sep 28 '20
Chapter 9.5: Ghostly Friend’s Dream Divination High in Spirits (Pt. V, Vol. II) released Oct 26 '20
Chapter 10: Ghostly Friend’s Dream Divination High in Spirits (Pt. VI) released Jan 26 '21
Chapter 11: Ghostly Friend’s Dream Divination High in Spirits (Final Part) released Feb 22 '21
Chapter 12: The Luminous Pearl Eternally Awaiting Salvation (Pt. I) by Akimaki Yuu and ZUN released Oct 26 '21
Chapter 13: The Luminous Pearl Eternally Awaiting Salvation (Pt. II) released Nov 30 '21
Chapter 14: The Luminous Pearl Eternally Awaiting Salvation (Pt. III) released Dec 27 '21
Chapter 15: The Luminous Pearl Eternally Awaiting Salvation (Pt. IV) released Jan 31 '22
Chapter 16: The Luminous Pearl Eternally Awaiting Salvation (Pt. V) released Feb 28 '22
Chapter 17: The Wind Circulates Through the Shrine Grounds (Pt. I) released Mar 29 '22