the Tanizakis, Mori— they all use these disturbing ruses to disarm or distract people in order to protect themselves, or to accomplish their goals. this is a writing device that asagiri commonly employs as a way to parallel the irl literature (it’s actually ingenious)

there are 4 main indicators that have always made it clear to me that Junichiro & Naomi are not siblings:

1. most obviously— their character designs. Harukawa is extremely intentional with character designs, & she very intentionally made Naomi & Junichiro look nothing alike

their eye shapes are purposely different

their color palettes are contrasting

even their differing styles of clothing have meaning

this was all done so that the audience could PLAINLY see that they’re not related— so that WE know that they’re lying when they say they ARE related

2. how the people around them respond to their act.

the general reaction is “don’t question it”— which is exactly what they want. “be distracted by how uncomfortable you feel so that you look away from what we’re hiding” (this is likely a protective measure)

3. most importantly, this is meant to parallel irl Tanizaki’s book “Naomi,” where the main character Joji picks up Naomi to raise her into his ideal woman, but since she's so young (& a minor) they call each other cousins (Joji makes no sexual advances on young Naomi btw)

however, his plan backfires because when Naomi gets older & they get married, she flips the script on him & manipulates HIM so that he's under her thumb (which is why bsd Tanizaki is at a domineering Naomi's mercy). Joji let her have her way because of his masochistic tendencies

4. lastly is the emphasis that Asagiri and the Tanizakis themselves put on calling each other siblings.

over & over, it’s “my brother this” & “my sister that”

like they’re desperately trying to convince us that it’s true (“don’t let your lying eyes deceive you”)

here are just a few of many examples from the light novels…

again, if you’ve read “Naomi” you knew that Junichiro & Naomi weren’t siblings as soon as they introduced themselves

just like if you’ve read irl Mori’s works, it’s clear that bsd Mori isn’t a pedophile

just like if you’ve read No Longer Human you know that Dazai’s an unreliable narrator. he makes you think he’s a bad person bc he believes he’s a bad person, but those around him see him differently (btw this doesn’t mean he’s never done anything “bad,” though bsd isn’t about morality— but that’s another discussion)

anyway, i’m so excited for the Tanizakis backstory to be revealed so that we can better understand why they use this defense!!

also let this be a reminder to READ THE LITERATURE if you’re able to!! even reading synopses & analyses of the coordinating books makes bsd make much more sense 🥹

reminder that this how you’re supposed to react while reading bsd: