Ep. 10: Shiroyama appears unaffected by the Black Sphinx, but a dark secret emerges.
Aired on March 14, 2019

Among all his companions, Shiroyama stands out as the sole individual who has not suffered any losses to the Black Sphinx. However, this apparent immunity is short-lived as a horrifying reality begins to surface. The narrative reveals that a terrible truth, previously hidden, is coming to light, challenging the assumption that he remains untouched by the group's shared trauma. This development suggests that the situation is far more complex than it initially appeared, forcing a reevaluation of Shiroyama's status and the nature of the threat posed by the Black Sphinx.
Episodes
- Ep. 6 · A character provides tutoring services to another character in exchange for tutoring.
- Ep. 7 · A Hole in His Heart
- Ep. 8 · Soshi's students investigate his past and the mystery of Shiro from ten years ago.
- Ep. 9 · The Black Sphinx proves to be a formidable opponent as puzzles intensify
- Ep. 10 · Shiroyama appears unaffected by the Black Sphinx, but a dark secret emerges.
- Ep. 11 · A new riddle challenges the classic Sphinx puzzle with the question of Spudio's identity
- Ep. 12 · Tutoring a Decade Later