History Recap / TheKindaichiCaseFilesSeirenIslandMurderCase

-->'''Kindaichi''': (with his mouth full of fish) Like there would be an appetite in this condition!

* DueToTheDead: As the elderly resident informs Kindaichi and Miyuki after the serial murder case is wrapped up, the metallic item that's located at the bottom of the island cave, which is relevant to the serial murder case in this case arc, is the only remaining submarine of [[https://en.wikipedia.org/wiki/Kaiten]], Japanese suicide navy crafts that were developed in the last stages of WWII. Being stranded underneath the island in rehearsal during wartime, it has been left alone since then, with all island residents at the time deciding to keep it a secret from outsiders in an attempt to memorialize those who were essentially wartime HumanSacrifice themselves.
-->That kaiten submarine is one of the memories I have of this island, because that thing is an eternal gravestone to memorialize many of the kamikaze soldiers, whose lives were seen as nothing much and only amounted to be sacrifices in the war.

* DestroyTheEvidence: The culprit confesses to have destroyed the recording device that contains the statement given by one of the doctors regarding [[[[DeathOfAChild a preteen girl]] (who, unbeknownst to the would-be victim, is the culprit's own daughter) being an UnwittingTestSubject of theirs after said doctors left, which helped to signal the culprit's change of focus from suing the doctors to ''murdering'' them.

* ConnectedAllAlong: The cameraman in this case arc had previously worked with the group of physicians in the past. A brief discussion ensues upon his reveal of this work-related history.
-->'''Miyuki''': B-But they didn't show any reaction when they saw you!\\

* InformedAbility: The participants in this case arc are supposedly experts in fishing -- most of them, at least, as Kindaichi's fishing skills are just basic enough to grant him rudimentary knowledge and Miyuki, by her own admission, doesn't even know "how to set a bait to the fish". Due (in part) to the serial murder case derailing the fishing tournament to the point of it being canceled, the viewers never get to witness any of the participants showing their fishing expertise. The only person who manages to catch fish in this case arc is the elderly resident, who uses [[TheStraightAndArrowPath an underwater rifle]] in conjunction to the diving gear to catch fish because she admits to being too old to have the strength that's needed to fish via a fishing rod, so she doesn't count.

* WorthIt: When Miyuki watches the oceanic view around them as the ferry carrying the fishing tournament participants to Seiren Island, the oceanic wind blows hard enough to lift her skirt and enable Kindaichi to cop a PantyShot, with Kindaichi calling the oceanic wind "kamikaze"[[note]] ("divine wind" in Japanese)[[/note]]. Miyuki promptly punches Kindaichi square in the face, though his remark makes it clear that he considers her punishment an acceptable price to pay.

"Seiren Island Murder Case" is a case arc in "The Kindaichi Case Files R" series of ''Manga/TheKindaichiCaseFiles''.

* DyingTown: Technically "dying island", as the island has no separate townships itself, but the trope applies all the same because it has a dwindling human population. At the present day, there's only '''one''' person, an octogenarian woman, who's still residing on the island. According to her testimony that's relayed to Kindaichi and Miyuki, the island population was around 100 in her younger years, during and after WWII, but the failed attempt to turn the island into a resort after WWII caused the already-critical economic status of the island to become downright unsustainable, which, in turn, resulted in the continual decrease of the island population until only she herself remained as its inhabitant, which has held true for the past '''twenty years'''.

* InformedAbility: The participants in this case arc are supposedly experts in fishing -- most of them, at least, as the elderly resident states that she is too old to have the strength that's needed to fish via a fishing rod, Kindaichi's fishing skills are just basic enough to grant him rudimentary knowledge, and Miyuki, by her own admission, doesn't even know "how to set a bait to the fish". Due (in part) to the serial murder case derailing the fishing tournament, the viewers never get to witness any of the participants showing their fishing expertise. The only person who manages to catch fish is the elderly resident, who uses [[TheStraightAndArrowPath an underwater rifle]] in conjunction to the diving gear to catch fish, so she doesn't count.

** The elderly island resident is seen using it to hunt for fish, as she states that her advanced age has sapped her the strength that is required to fish via fishing rod.

* ContrivedCoincidence: The cameraman in this case arc had previously worked with the group of physicians in the past. A brief discussion ensues upon his reveal of this work-related history.