硝子の塔の殺人 🗼 (ABC) Week 5

硝子の塔の殺人 :tokyo_tower: Week 5

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Week 5 September 27th, 2025
Chapter(s) and sections 二日目: 6
Start page 223
End page 252
Page count 30
Previous week week 4
Next week week 6

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Character names (p.6)

Full Name Occupation Room
神津島太郎こうづしまたろう 館の主人 壱の部屋
加々見剛かがみつよし 刑事 弐の部屋
酒泉大樹さかいずみたいき 料理人 参の部屋
一条遊馬いちじょうゆうま 医者 肆の部屋
碧月夜あおいつきよ 名探偵 伍の部屋
巴円香ともえもどか マイド 陸の部屋
夢読水晶ゆめよみすいしょう 霊能力者 漆の部屋
九流間行進くるまこうしん 小説家 捌の部屋
左京公介さきょうこうすけ 編集者 玖の部屋
老田真三おいたしんぞう 執事 拾の部屋
Illustrations before the prologue

Participation

Will you be reading along with us this week?

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4 Likes

Finished this weeks reading actually in last weekends readathon. Was convenient. But because it’s so long ago I don’t remember that much about this one chapter.
I’m reading something else now to not sprint away too far for better discussions…

I have the following notes

  • He got me, in the beginning I seriously thought 夢読 also bit the dust. But she just wanted to be left alone
  • 冬樹 makes a return. First I was like 30years + 13 years since the incident+ 18 years of highshool → quite old could really have been 老田. But then the information is dropped that he just took over the 戸籍. Therefore speculating about the age is useless :person_shrugging:

Also happy 50% point reached. Felt like an awful lot of words for how little actually happens up to this point :thinking:

7 Likes

I really enjoy this author but I was just commenting today actually that his short books are paced really well and pull you along but his long books could do with a bit harsher editing. Most of them (this one included) I don’t think drag on so long as to be a major issue, but his debut novel probably could have been shortened by at least a hundred pages :sweat_smile:

7 Likes

Ooh, short page week, nice~

3 Likes

Still reading this chapter, but weird theory time, brought to you by a very sleepy eefara: the presence that 夢読 keeps feeling is the reader’s gaze and reading of this book. We keep going deeper and deeper into discussion about a meta-mystery within the book itself, so it felt like a surprisingly reasonable piece of speculation.

8 Likes

Haha that would be funny xD

Week 5

階段をおりて合流した遊馬と月夜が誰もいなかったことを告げても、予想通り夢読が落ち着くことはなかった。「あなたたちが気づかないだけよ!」「絶対に誰かいるの!」などと喚き散らし続けたが、やはり空腹だったのか、遊戯室に向かうことに抵抗はしなかった。
Same with my kids: being hysterical? probably just hungry

Theory time: 加々見 totally killed 巴 when he went after her “but it was too late she had locked herself in her room”

6 Likes
Akashelia

I was thinking the exact same when I read that. We will see next week if you are correct or not. It should be discovered the next morning then.

5 Likes
Theory

I thought about that too, but it would seem… too obvious? But it’s clear that 円香 totally knows something is going on. I’m wondering what kind of relationship she has with the case though.

I wonder if we really know that 冬樹 is a man? There seems to be so many things about him that are unclear… who knows?

6 Likes

“We don’t know his actual name or what he looked like, but don’t worry guys: he’s definitely dead even though we never found a body!”

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The good thing about nothing happening in this book is that we get a lot of leeway to speculate!

Based on the witness descriptions I managed to draw what I think they look like:

Just add the sunglasses.

8 Likes

The criminal she was interested in wasn’t a guy at all

6 Likes

I agree it seems a bit too obvious
I thought for a second, what if she’s the missing wife, but then 加々見 would surely notice immediately. Unless… he’s in on it too. Went looking for her in the investigation, found her, they started a relationship in secret, something like that.
I think she quite possibly dies, but I don’t think it’s 加々見 that does it.

Overall I’m not sure there’s actually a strong connection with the old case 13 years ago or whenever it was. If there is a connection, I think it’s a couple steps deeper than just 冬樹 being one of them.

8 Likes

加々見 doesn’t seem very competent and doesn’t take the case seriously. He also seems vaguely sexist and dismissive of women. I wouldn’t be surprised if he failed to identify her if she altered her appearance.

At the same time that would feel a bit random IMO. I guess she could have been abused or something and decided to kill her fiancé but it hasn’t been established in any way yet.

6 Likes

Although I just recalled that 加々見 insisted that 円 should be the one carrying the body of the butler with him. That was a bit odd. Him running after her this week is the second time he contrives a scenario to be alone with her.

7 Likes

I’d forgotten that, but along with 加々見 not wanting anyone to go near the body of 神津島, now I’m pretty sure there’s something going on with him, and 巴 is involved with him some way too

5 Likes

Join us in the thread for week 6 if you have finished this part!

4 Likes

Alright, had another book I wanted to finish reading by a deadline so brushed this off to focus that down, and then busted my way back in here. (I know week 6 is up but it’s technically still Friday so I’m considering it caught up.) Author is obviously a huge mystery buff (hopefully they’re just as good as writing them). The 屍人荘 reference was very cute.

My main thoughts were basically exactly covered by this post. Why do we need to know exactly how many rotations up and down the stairway they go each time. If you look at the diagram it looks like the rooms go up the cone in a spiral—so there could easily be a second set of rooms opposite (forming a double spiral), although doesn’t seem like that would help much at this point. Fire could’ve been started by a lensing effect (Kozushima seems like a jerk enough to make windows like that, and the fact that nobody is suggesting the possibilities just makes it seem more likely).

Yeesh, Yuma is an awful murderer. Pretty shocked nobody noticed he was gone. Really hope that the at the end Tsukiyo is like “yeah I clocked you immediately, figured you were so obvious with that one I could kill anyone else I wanted and nobody would believe it wasn’t you” (also why she didn’t want to tell the group about their “alibis”)

This is going back a bit, but regarding the “Y” message being lame—100%, but only because if you’re going to be choosing famous poisoning murder mysteries to reference, The Tragedy of X is tied much more strongly to poisoning than Y.

Regarding the bloody message at Oita’s crime scene, my best guess is that Oita wrote the killer’s name (or something else incriminating) and then the killer wrote over the message to disguise it, but too lazy to puzzle out which character’s name could undergird the final message.

7 Likes

I like that theory!

But Yuma isn’t called Xuma though

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I agree that, rationally, 月夜 should know that 遊馬 was at least involved in the first murder. One thing that I think we haven’t discussed but was mightily stupid of him was not immediately examining 神津島 when they “discovered” his body. You know, like a doctor would do when they find their patient collapsed on the ground? Instead he silently stood behind waiting to drop the key. That’s incredibly suspicious.

7 Likes

Yay, I finally caught up with you guys!

Either nobody told it or I missed it, but I feel like Tsukiyo doesn’t interview people properly. We don’t yet see people discussing alibis for Koudzushima’s murder, and it is already the third day about to start! She has tons of ideas, but somehow she doesn’t try to get all the information she needs.

I agree it was suspicious to no end that the doctor didn’t try to check his patient health when they found him.

I wonder if Yumeyomi is not scam and actually feels something. Otherwise her presence is just too hysterical :sweat_smile: I also was almost sure she would be dead by the end of this chapter.

At first I thought that would be a Colombo-like story, but it was a nice surprise that there are more than one murderers, so there is a room to mystery solving. Although information is lacking a lot :slight_smile:

The final development with Tomoe is interesting, and I like the theory that is is the bride. If so, I hope she won’t be killed.

7 Likes