In the middle of the longest bridge in the world sits an abandoned artificial island. Long forgotten by its creators, it is now a lawless wateland split into multiple districts, in which conflict is always imminent. Home to societal drop-outs, runaways, organized crime families, serial killers and its own generation of children, the island becomes the stage on which many people come and go to live out their stories.

Part of Ryohgo Narita’s overarching [[TheVerse Verse]] of light novels that includes ''LightNovel/{{Vamp}}'', ''LightNovel/{{Baccano}}'', ''LightNovel/{{Durarara}}'', and ''[[LightNovel/HariyamaSan Hariyama-san]]'', the Etsusa Bridge series is chronologically the last series in the verse, and is complete with 4 volumes and 1 collection of short stories.

!!Tropes in ''Etsusa Bridge'' include:
* AnimalMotifs: The first volume, ''Bow Wow! ~Two Dog Night~'', is centered around two characters that are likened to dogs. The title of the second volume is ''Mew Mew! ~Crazy Cat's Night'' in reference to Jun Sahara being called the "Kitten of the Eastern District".
** AnimalThemeNaming: The above aforementioned characters (Hayato Inui and Seiichi Kugi) both have kanji relating to dogs in their names.
* BlindingBangs: Jun always has hair covering her eyes,
* ChainsawGood: Jun's {{Weapon Of Choice}}. Her lightweight, powerful double-chainsaws have been know to scare some into submission.
* CluelessDetective: Charlotte. If not for Sherlock, they probably wouldn't even be in business.
* FloatingContinent: Limited to just an island, but still counts.
* FlowerInHerHair: Yili, Lilei, and Fei all wear the same white flowers in their hair.
* KidsAreCruel: The Rats rely so heavily on each other that they don't hesitate to beat up anyone who might threaten their group. [[spoiler:And they end up leaning toward {{Children Forced To Kill}}.]]
* LoadsAndLoadsOfCharacters: Par for the course for one of Narita's works.
** CastOfSnowflakes: Especially impressive considering that none of the characters have any supernatural elements to them, unlike Narita's other Light Novels.
* MadeOfIron: Kuzuhara, but his bullet-proof gloves and coat help with that image.
* MulticoloredHair: Hayato has rainbow dyed hair, which comes back to bite him a couple of times, just because it's so recognizable.
* MyGreatestFailure: Seiichi regards the death of his best friend by stray bullet in a shootout since they weren't supposed to be there in the first place.
* OddNameOut: Look at the list of Naritaverse works. ''Etsusa Bridge'' is the only one with A) more than one word, and B) no exclamation points, until the release of ''[[LightNovel/HariyamaSan Hariyama-san]]''.
* OverlyLongName: Gitarin's names are not only extremely long, but also constantly changing. Names include "Char de Grandeur Ratzfend Zorba Gitarin Santamaria Redrum Masamune" and "Levert Lowe Sturbaiken Gitarin Chloroclad Kagenomiya the 666th".
* RuleOfCool
* SignatureLaugh: Kelly’s ever-present “Heehahahaha!”.
* TheVerse: Directly connected to ''{{LightNovel/Durarara}}'', and said to be set 15-20 years after it.
* {{Tsundere}}: Lihuang has been shown to have some Tsundere-like feelings towards [[spoiler:Charlotte]].
* WretchedHive: The floating island appears to be this.