''High School Exciting Story: Tough'', or ''Koko Tekken-den TOUGH'' as it's known in Japan, is a Seinen manga written and illustrated by Tetsuya Saruwatari who was also responsible for the artwork of the popular and notoriously violent manga Riki-Oh. HSE:Tough revolves around Kiichi Miyazawa a 17 year old high school student who
is the heir to the secret Nadashinkage-ryu fighting style that was passed down to him from his father Seiko. The Nadashikage-Ryu is a fighting style
that utilizes the user's knowledge of and hitting of an opponents vital organs and pressure points in such a way it can outright kill the opponent if the user isn't careful enough. The series revolves around Kiichi's goal to become strong by defeating even stronger opponents in what are essentially Death Matches though almost no one Kiichi fights actually dies (permanently anyway). The original series ran for 42 volumes which ran in YoungJump from 1994-2003 it was apparently popular enough to get a 3 episode OVA adaptation titled ShootfighterTekken which covers a small fraction of the first arc of the manga, a sequel to the original manga simply titled "Tough" which is still ongoing, along with a side-story that revolves around Kiichi's father Oton.

----
!!It provides examples of the following {{Tropes}}:

* AbusiveParents:
* AlcoholicParent: Remco's mother who also happened to be verbally abusive.
* ArtEvolution: [[http://www.mangafox.com/manga/koko_tekken_den_tough/v01/c001/10.html Kiichi before]] and [[http://www.mangafox.com/manga/koko_tekken_den_tough/v02/c010/5.html Kiichi after]] should be noted Tetsuwari's art improves even beyond those two examples.
* AccidentalMurder: Barely averted with Kuroda at Kiichi's hands who caused the former's heart to stop.
** Also played straight with Kuroda following a Judo Exhibition with his friend Naruse
* ActionGirl:
* BadAssBookworm: Oton
* BadAssGrandpa: Heizo "The Destroyer" Onikawa.
* CaptainErsatz: Kiba could pass as a somewhat reasonable facsimile to AntonioInoki.
* CallingYourAttacks:
* CrowningMomentOfAwesome:
* CurbstompBattle: Kiichi handed out a couple of these over the course of the series.
* CutShort: The Original manga only had 6 volumes released in America by Viz before they stopped publishing it.
* DefeatMeansFriendship: Kiichi seems to love befriending or becoming friendly rivals with the people he fights.
* DeliberateInjuryGambit: During his fight against Kiba, Kiichi deliberately allows himself to hit a ring post head first, the reasoning behind this was that if Kiichi hit the post originally as Kiba intended he would've suffered a much serious injury to his head.
* EvilEye: During their near fight Oton feels Master Genchu with so much fear and terror he causes him to bleed out of one of his eyes.
* ExtremeMeleeRevenge:
* EyeScream: Kiba became an unfortunate victim of this at the hands of Oton though he's come's off nonchalant about it.
* {{Fingore}}: During his fight against Kiba, Kiichi gets 2 of his fingers broken doesn't stop him from popping them back into place.
** also happens to an unfortunate gangmember who made the unfortunate mistake of stabbing Yoshiki.
* GeckoEnding: Subverted by the OVA which ended at the conclusion of the manga's first arc.
* HardHead: The word concussion or fractured skull doesn't seem to apply to most of the fighters in this series.
* HowMuchMoreCanHeTake:Kiichi usually gets worked over bigtime before he pulls off the inevitable (but not always occurring) victory.
* JerkAss[=/=]JerkWithAHeartOfGold: Kiichi can come off a jerkass a great deal of the time even too his friends, though he has also been known to shown compassion and even respect to his opponents even after they just came out of fight where they intentionally try to kill or cripple him.
* LaserGuidedKarma:
* ImportantHaircut:Yoshiki get's one along with a goatee in the second arc which practically makes him almost unrecognizable.
* ManlyTears: Kiba' & Kiichi's fight at the end of the first arc was powerful enough to invoke this from those there.
** Happens during Kiba's retirement speech among some fans.
* KickTheDog: Kiba's backstory.
* MyKungFuIsStrongerThanYours:
* NamesToRunAwayFromReallyFast: Asura,Maneater, The Destroyer just to name a few.
* NoHoldsBarredBeatdown:
* OriginalVideoAnimation:
* OverprotectiveDad: Oton gets called out for this during Kiichi's fight
* PapaWolf: Oton doesn't like when someone purposely threatens Kiichi's life (eventhough Kiichi gets himself into these very situations).
* PutOnABus: Mysteriously and unfortunately winds up happening to Kuroda towards the end of Kiba & Kiichi's fight despite being at the fight from the start.
* RedemptionEqualsDeath: [[spoiler:Samon]]
* {{Seppuku}}: Oton makes a point to remind Kiichi that if he ever sullies the name of the Nadashikage Style by losing he will be forced to take his own life.
* ShoutOut: In the first chapter of the manga, Kiichi fights a wrestler named [[AshitaNoJoe Mammoth Nishi]].
* {{Squick}}: In this series legs get broken, arms get snapped, and in the most extreme cases bones splinter causing them to pop through the skin not pretty.
* TheStoic: Oton when's not acting like a mild mannered salary man who has to .
* TooDumbToLive: Kiichi abuses the hell out of this trope.
* ToughLove: Played justifiably straight with Oton & Kiichi.
* CombatPragmatist: Many characters have no problem using underhanded tactics even in sanctioned fights, hell both Oton & Kiichi have shown willingness to use underhanded tactics such as eye gouging and low blows.
* TheWorfEffect: Kiba suffers this fate "badly" at the hands of the second arc's big bad.
* TheParalyzer: Onikawa's specialty.
* TrainingFromHell: Played straight with Kiichi & occasionally with other characters.
* UnfortunateImplications: Kiba has no qualms about hitting women or children for that matter.