Ten years after the events of ''VisualNovel/KatawaShoujo'', Hisao Nakai is HappilyMarried to Hanako. As the various students of Yamaku have continued with their lives, Hisao has entered a business partnership with Kenji Setou, who remains -- for the time being -- an eligible bachelor. A PrivateDetective and writer, Kenji has shifted his efforts from uncovering the feminist conspiracy to revealing the {{Ancient Conspirac|y}}ies of puppeteers controlling the world.

He gets his chance when Shizune Hakamichi’s father Jigoro goes missing, propelling the two detectives on an epic journey full of ever preposterous and awesome action. The two will face an epic crusade the likes of which only Kenji could cook up. With the help of unlikely allies, a lot of guns, and Kenji’s firm belief in the Power of Awesome, the two will fight for the world and to keep their families from finding out what they’re up to.

Written by Hoitash, the duo goes on adventures involving the Yakuza, Templars, Freemasons, the Illuminati, aliens, werewolves, and no small amount of shooting. The story has grown to include Hisao and Arika: Terror in the Night!, Road to Tokyo!, Concrete Jungle, Picking up the Pieces, one-shots, and a distant finale.

This fanfic can be found [[http://ks.renai.us/viewtopic.php?f=52&t=6507 here]].
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!!''Hisao and Kenji- Master Detectives!'' contains examples of:
* AncientConspiracy: TheIlluminati, the Templars, and the Freemasons.
* ArtificialLimbs: Emi, obviously, also [[spoiler: Miki gets an augmetic hand to replace her lost limb, and Emi eventually gets augments to replace her old leg prosthetics.]]
* BabiesEverAfter: Hisao and Hanako, Lilly and George, [[spoiler: Kenji and Miya.]]
* BadassLongcoat: [[spoiler: Akira and Hisao both wear dusters while fighting a werewolf, to protect them from both it's claws and fangs.]]
* BerserkButton: Hisao's is making his Hana cry, while Kenji's is drugging and raping young women.
* BulletProofVest: Saves Hisao's life in [[spoiler: the raid on the Freemason base.]]
* CasualDangerDialogue: While not egregious, Hisao and Kenji don't let little things like incoming fire stop them quipping or snarking, usually at each other.
* CombatPragmatist: Shizune encourages Hisao to fight dirty during a sparring match. He proceeds to elbow her in the face and kick her in the gut during their next spar. Her father also willing to fight dirty, which includes biting a Predator during a duel.
* CoolVersusAwesome: The aforementioned fight between Jigoro and the Predator.
* CrazyPrepared: Kenji. To the point of having a bulletproof desk, and many guns in said desk. [[spoiler: He also, upon suspecting a werewolf presence in Hokkaido, makes sure Hisao has the needed supplies to deal with such a threat in his summer home, complete with silver bullets and guns.]]
* {{Crossover}}: with ''VideoGame/DeusExHumanRevolution'', ''Series/{{Eureka}}'', ''Series/Warehouse13'', and the ''Franchise/AlienVsPredator'' franchise. ''Franchise/DieHard'' also makes an appearance in a one-shot.
* DartboardOfHate: Kenji has one of Shizune in his and Hisao's university dormitory, though naturally Kenji hits the wall as often as the board.
%%* DeadpanSnarker: Hisao and Kenji have their moments.
* DisabledSnarker: Hisao still has a heart condition, and Kenji is still legally blind.
* DistantFinale: centered around Hanako's birthday, and all the friends they made along the way.
* DressingAsTheEnemy: Used to infiltrate a meeting between the Illuminati and the Templars.
* DueToTheDead: Kenji and Hisao raise their glasses to their fallen allies [[spoiler: in the Freemasons.]]
** The werewolf is given a proper burial after he is defeated.
* EnemyCivilWar: Kenji and Hisao try to get the Illuminati and the Templars, along with the various organized crime groups, fighting each other.
* FacePalm: Hisao tends to do this when irked, much as he did in the VN.
* FearofThunder: Hisao's son, Akio. Kim Soon-hee also dislikes it because it triggers her PTSD.
* FirstPersonSmartass: Hisao's narration can be very snarky, especially when he's upset with Kenji.
* GamerChick: Hisao mentions a few times that Hanako enjoys playing video games.
* ICallitVera: Kenji keeps a sawed-off shotgun under his office desk which has "Matt 5:9" stenciled into the side. He and Hisao often refer to the shotgun as "Matthew."
* InterruptedSuicide: [[spoiler: Akira]] puts a gun to their head when they think they are about to die from a werewolf attack, hoping to buy time for Hisao to to land a killing blow. Hisao stops said attempt.
* TheMafiya: Make an appearance.
* MotorMouth: Naomi in the Distant Finale Birthday Special has to be physically stopped from rambling at one point.
%%* NoodleIncident: the Kyoto incident.
* PoweredArmor: Templars employ these, and several have been acquired by the Illuminati. [[spoiler: Hisao borrows a suit of American made prototype armor to fight a Predator that's hoping to add Jigoro to his trophy case.]]
* PrivateDetective: Kenji's day job, and Hisao gets dragged along for the ride.
* RousingSpeech: Kenji is rather fond of these, whether they succeed or not.
* RunningGag: Hisao REALLY hates the color of the paint on the walls in Kenji's office.
* SemperFi: The antique store owner in Road to Tokyo sports an Eagle, Globe, and Anchor tattoo.
* ShoutOut:
** Hisao seems very well versed in ''TabletopGame/Warhammer40000'' lore, and mentions several times to be reading a Literature/CiaphasCain HERO OF THE IMPERIUM novel.
** [[spoiler: Hisao and Hanako's youngest daughter Refia is named for the female character in ''VideoGame/FinalFantasyIII''.]]
** A Mafiya member is named [[Series/{{Firefly}} Adelai Niska]].
** A Freemason member declares that [[VideoGame/ModernWarfare "we are leaving!"]]
** The ''Franchise/DieHard'' drinking game is a sacred Christmas tradition.
** Many entries start with quotes pertaining to the story.
** Concrete Jungle ends in a similar matter to ''Predator 2''.
** In college, Hisao and Kenji played poker with [[Anime/KillLaKill Kaneo Takarada]]
* TheAlcoholic: [[spoiler: Miki had a bout of this before her first appearance, and has since sobered up, though ironically she now helps run a restaurant with a bar.]]
* TheStoic: Akira's husband, Daichi, doesn't talk much.
* ThemeNaming: The Chapters for Mystery Eight have an art theme, to reflect [[spoiler: Rin and her husband's appearance in the story.]]
** All the chapter titles for Picking up the Pieces are quotes from ''Literature/MobyDick'' (which also serves as a Callback to Concrete Jungle).
* ThemeTwinNaming: Akira's twin daughters are names Chise and Carry, reflecting the family tendency to give one child a Japanese name, and one a Western one.
* ThereAreNoTherapists: Averted; Hisao mentions several times seeing a discreet therapist to cope with the stress of his and Kenji's adventures.
* ATrueStoryInMyUniverse: Hisao and Kenji start a series of adventure novels based on their adventures, and it is implied that the stories themselves come from Hisao's personal memoirs.
* {{Yakuza}}: Makes several appearances, and Jigoro himself was a former member.
* WorthyOpponent: [[spoiler:The Predators consider Hisao and Kenji as one.]]
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