Just putting down some observations/questions/theories I have about the four cases so far.
Missing limbs, a shady cult involving a filthy rich family, and an ambiguously-aged granny. Why does that sound so familiar?
File 1
- One-armed/legged statue implies some cult is involved.
- Another reader thought the layout of the Negishi itself looked like the one-armed/legged lady. After looking at some other floor plans on Kurihara's table, I think they're onto something.
- The mother seems to be more involved in whatever this cult is, the father seems to be largely absent from this story.
- I have a sneaking suspicion the boy that got run over by the truck was no accident. They hired Misaki Home Builders to make their house, but the parents (or at least the wife) seems to be involved in the cult - which is linked to Misaki's rival, Hikura House. I have a feeling Hikura is involved in this "accident" somehow. Perhaps use this incident to make Misaki look bad?
- I wonder what's the significance of Negishi's hate/fear/concern of her child.
File 2
- Files 2 and 4 make me wonder if Hikura's making badly designed houses on purpose. If so, for what purpose. File 4's design at least seems deliberate (I'll get into this later).
- Though this murder case is "solved," I wonder if there's more to this story. Is the cult involved? Is there any particular significance to the layout of the house? Having one person go crazy is one thing, but having both the mother AND the boy stab people?
- Is the abuse allegation against Hikura true? If not, why would the author bring it up?
- The "Caagle" search seems to support the idea Hikura House is involved in some cult.
File 3
- Why make the "execution chamber/confessional" a watermill - especially since there's no water nearby? Pretty sure they could've come up with a less conspicuous design if that's all there was to the hut.
- Is the statue linked to the one-armed/legged lady?
- I think the statue might be Kishimojin, a sort of guardian of children. So are the "sinners" atoning for something to do with children or parenting?
- What's up with the white egret? Why is a wingtip missing? How did she know it was a female egret, specifically?
- In fact, what's up with all the injured/missing limbs throughout all these stories? First we have the one-armed/legged statue, then we have the egret, and later on there was the child with a festering wound on its arm. (I suspect there's also one in File 4)
File 4
- Mitsy's face must be ACHING from all that smiling.
- I don't think Mitsuko had any malicious intentions - she could've dropped her "nice girl" act after her grandmother's "accident," but she still seemed to treat Shiori nicely before going to the hospital.
- If this is the Mousetrap House, who's the mouse? The most obvious answer would be the grandmother, but what's the motivation behind her murder?
- The house layout's awful, as is expected of the Hikuras. I suspect there's much more to it than this - keep in mind the layout was drawn from Shiori's memory from maybe 20 years ago, and it's not like she explored the whole house.
- A lot of attention was drawn to the wardrobe/bookshelf, so again there might be more to it than was revealed so far.
- Grandma wore gloves and a skirt that hid her legs. Makes me wonder if she's hiding an injury or a disfigurement. She doesn't seem to use her left hand at all. She also has difficulty walking unaided. The only other thing I'll say about this is, the statue from file 1 is missing a left arm and right leg.
- Historically, masters lived on the bottom floor while servants lived on upper floors (well, that's in western societies from 100 years ago, I don't know how rich people live nowadays, so I might be talking out of my ass). So why was Mitsy and granny living on the second floor? Especially since granny has mobility issues. If she has so much trouble reaching the bathroom, there's no way she'd be able to go down those stairs. I suspect the house is a literal death trap.
- So why was Shiori brought to the house? What was her role in this "accident"?
Alas, no omake or other bonus materials.