The writing is decent but by the middle of the book I'd already figured who is the real murderer, and the explanation for the murder mystery is a bit on the "Meh" side. It's a pity, for the writing shows the author had done his/her homework at 'locked room murder mysteries'.
Reflection As was already pointed out at the time with regard to the shin-honkaku movement, the characters in this work likewise lack “human warmth” in the ordinary sense of the term. Yet for me this very quality works to its advantage, giving rise to a kind of abstract, almost ideational atmosphere of youth and a sense of nobility that I find appealing. Taken as a whole, the work feels less like a piece of literature than like an academic paper on tricks and devices; but this is not a case of an absence of existential depth. Rather, it embodies the existential condition of that literary current itself.
In the story, an 'Alibi Lecture' is presented, and at the end of the volume, the author includes an appendix listing representative works by category. I would like to excerpt it as a handy reading guide—but be aware that the category names might contain spoilers.
① Witness has malice Death on the Nile – Agatha Christie The Discontinuous Murder Case – Ango Sakaguchi
② Witness is misled about time, place, or person A Person Calls It a Love Suicide – Tetsuya Ayukawa
③ Mistake at the crime scene (No examples)
④ Fabrication of evidence Fatal Venture – F. W. Crofts
⑤ Mistake about the estimated time of the crime (earlier or later than actual; also distinctions between medical and non-medical timing) The Door Without a Keyhole – Tetsuya Ayukawa
⑥ Blind spot in the route The Sittaford Mystery – Agatha Christie Towards Zero – Agatha Christie
⑦ Remote murder a. Mechanical b. Psychological The Origin of the Blank – Saho Sasazawa The Illusion of Flame – Saho Sasazawa
⑧ Induced murder The Dark Slope – Saho Sasazawa
⑨ Readers are misled into thinking something constitutes an alibi when it does not I Hate to Part at Noon – Saho Sasazawa