''Triage X'' is an ongoing {{Manga}} series by Shouji Sato, of ''Manga/HighschoolOfTheDead'' fame. Drawn in his [[{{Fanservice}} typical style]], it depicts the actions of a hospital-themed vigilante team stationed at the Mochizuki General Hospital. Features motorcycles, gunplay, StuffBlowingUp, and fanservice.

Though it has the Mochizuki team as protagonists, it mainly centers on Arashi Mikami, a teenaged vigilante assassin who received an organ transplant after Dr. Mochizuki's son Ryuu was declared brain dead when a terrorist attack took place at the International Medical Center in Tobioka City. Even though he lost the things important to him, Arashi is prepared to make the best of it by combating crime in the city.

The series consist of a manga and an anime adaptation that aired in April 2015.

* ActionPrologue: One is shown at the beginning of the series.
* AdaptationExpansion: Partially in the anime version where Syringe is shown analyzing the results of Black Label's action against the Aranamis.
** It also shows the early years of Sayo being taken care of by Yuko.
* AmbiguouslyBi: Miki and Yuko. While the two of them are drunk out in the mountains, and on the phone with Mikoto, Miki starts groping Yuko, who only asks her to stop because in her own words "that's what I'm supposed to say right?", explaining that she and the men of Tobioka need to know if they're real. They then start insisting men are stupid, before switching their opinion and start screaming over the phone about how they need to go find a man.
* AnArmAndALeg: A Neo TV crewmember is shot in the leg by a terrorist when Wild Hunt invades the building.
* AssholeVictim: Pretty much anyone killed by the main characters. They will often be seen in a KickTheDog moment to further justify the main characters killing them.
* BadassCrew: Everyone in the main cast.
* BoomHeadshot:
** An idol singer suffers this from Wild Hunt, killing her on the spot.
* CarFu: Mikoto and Arashi make use of this with their motorcycle from time to time.
* CodeName: The protagonists' organization classifies people they deal with using medicine-themed terms, from "Fever" (minor nuisances that amount to no tangible threat to Tobioka City) to different types of "Black Label" (criminals so vile that they need to die for the good of the city but untouchable to conventional law and justice) such as "Malignant Tumor".
* {{Crossover}}: With ''Manga/HighschoolOfTheDead'' in ''Lightning Pop''.
* DeadStarWalking: Chikage is voiced by Creator/RyokaYuzuki. [[spoiler: She dies after two episodes.]]
* DieHardOnAnX: The Neo TV arc has terrorists hijack an idol concert with Oriha attempting to fight off the terrorists.
* DysfunctionJunction: All of the characters are confirmed to have had a major brush with death. Arashi nearly died, and would have had he not been given most of his best friend's body. Mikoto nearly died in a motorcycle accident, [[spoiler: the same one that killed her brother]]. Hitsugi [[spoiler:was experimented upon as a child, became a superhuman weapon, killed everyone involved, and was then killed and revived by Yuko]]. Oriha is implied to have [[MissingMom lost her mother]], though how is unknown. It's not yet stated what the others' had happen.
* FanService: Tons of it.
* FieryCoverup: How our heroes obscure the evidence of their actions.
* {{Gainaxing}}: Done from time to time in the anime, especially because almost all of the female characters have rather large breasts.
* HostageSituation: Occurs regularly throughout the show, such as when the terrorists take over the Neo TV station building.
* MookHorrorShow: Black Label are regular thugs' worst nightmare.
* MortonsFork: The people with explosive vests strapped to them when Mikoto attempted to take down the remnants of the Kabuto-gumi. They are told that if they can kill Mikoto, the gang leader would let them live, but if they don't, he would set their vests off. Chikage tells them he probably wouldn't hold up that promise had they of succeeded. [[spoiler: It's defused when Oriha was able to disarm them.]]
** Mikoto gives the drug dealer a hacksaw to either cut his hand and get away, but eventually bleed to death or allow himself to be caught and arrested by the police.
* OhCrap: Do not bother to shoot Arashi's motorbike helmet as it is totally bulletproof.
* OffScreenVillainDarkMatter: Syringe has access to an [=V-22=] Osprey [[spoiler:and if the fake Makoto Ogawa is any indication, to prototype small arms that even Western militaries have not fielded yet into actual combat ops]].
* SequelHook: As of the final episode, Syringe and the Yakuza are still at large, Konomi is still in a coma, and [[spoiler: as Arashi decides to walk back to headquarters, someone has his or her scope laid on Arashi...]]
* StuffBlowingUp: Done on a regular basis in the show.
* TheStinger: Several episodes end with one. Most of them involve [[BigBad Kaname Makiishi]], the leader of Syringe.
* TyopOnTheCover: The "Monte Calro SS" restaurant Arashi visits in the first episode. It was probably supposed to say "Monte Carlo SS"
* [[VigilanteMan Vigilante Team]]: What the main characters are.
* WhamEpisode: After the end of the Pyrina arc, Tatara and Suzue realize that the Makoto Ogawa they know is not him. [[spoiler:They find out that Syringe has "taken care" of the real one so that their mole can take over.]]
** In the Neo TV arc when Wild Hunt leads armed terrorists to take over the Neo TV station, then kills an idol singer to prove they're serious.
** [[spoiler:Sayo reveals to the Murasaki siblings that she's responsible for killing her father, Togo Itaru, while berserk due to the use of D99.]]
* WhereTheHellIsSpringfield: Tobioka City's location in Japan is unknown.
* WorldOfBuxom: The anime adapatation drives this UpToEleven.
* WouldHitAGirl: A man in a bear suit similarly attempts to attack Oriha and the other girls with her, forcing them to fight back.