A manga written by Mizukami Satoshi, who is best known for writing ''Manga/TheLuciferAndBiscuitHammer''.

"Stop your evil deeds and take the right path!"

That is the creed of Tama and her younger step brother, Jinka. The two demon siblings travel the country to stop the deeds of all evil doers, along with a cowardly swordsman they picked up along the way, Hyoudou Shinsuke. Their travels lie with many twists and turns, as well as wacky characters they'll meet along the way.

----
!!''SengokuYouko'' provides examples of:
* ActionGirl - Shakuyaku, the Mountain God, Tsukiko.
* AloofOlderBrother - Raidou Zanzou The Demon Eater.
* AlwaysSomeoneBetter - The Mountain God claims to be this to Taizan. [[spoiler: She later shows it by Curb Stomping it.]]
** Proven and lampshaded by a Daiganshu monk when she shows up at the Daiganshu temple.
* AmazinglyEmbarrassingParents - [[spoiler: Kuzunoha to Tama.]]
* AnyoneCanDie - [[spoiler:Shakuyaku and Kagan]]
** [[spoiler: Although it's technically more TakenForGranite.]]
* ArmCannon - Shakugan
* AxCrazy - Resshin/Barrie Zalmoa.
* BadassBoast -
-->'''Raidou Zanzou:''' "The fear of humans, I will carve it in your very bones"
* BadassFamily - [[spoiler: Jinun and Senya.]]
* BarbieDollAnatomy: Tama during the HotSpringsEpisode, and Hanatora.
* BattleCry - Shinsuke, Jinun.
* BecomingTheMask - Shinsuke becomes more like his sword.
** Later subverted; Arabuki appears to be AxCrazy at first but later stops Shinsuke from doing the same.
* {{Beergasm}}: The orang-utans' sake seems to be this good.
* BerserkButton - Jinka and humans disrespecting demons.
* BigBad - Yazen. [[spoiler: Later the Tribe of the Void arrive to form a BigBadEnsemble.]]
* BigGood - The Mountain God. [[spoiler: Later subverted/averted. The Mountain God is NOT Good. She has a totally different set of morals and priorities to the rest of the cast.]]
* BloodKnight - Resshin/Barrie Zalmoa, Douren.
* BlowYouAway - Shinsuke, or, technically, Arabuki.
* BodyHorror - Zenya and Resshin/Barrie.
* CallBack: The title page of chapter 70 is a call back to the title page of chapter 28.
* CallingYourAttacks - Almost everyone.
* CurbStompBattle - Raidou Zanzou in both his fights against Jinka [[spoiler:only he lost the second time]].
* [[spoiler:DecoyProtagonist - Jinka's run as the lead ends with his turning into the beast god. It's Senya's turn now]]
* TheDragon - Jinun, literally.
* DynamicCharacter - Shinsuke.
* {{Expy}} - Senya not only looks like a younger version of Maimakterion from the author's other [[TheLuciferAndBiscuitHammer work]] but also has a similar set of shapeshifting powers.
* EvenEvilHasLovedOnes - [[spoiler: Senya to his father, Jinun. Kuzunoha to Yazen. The man was willing to have Taizan trample everything and cause damage to his lab in order to protect Kuzunoha's existence.]]
* FastballSpecial - Jinka and Tama do this, in order for her to deliver a ''flying kick'' to [[spoiler:her mother]] Kuzunoha.
* [[FiveManBand Four Man Band]]
** TheHero - Tama.
** TheLancer - Jinka.
** TagalongKid - Shinsuke.
** TheBigGuy, TheChick - Shakugan.
* FiveBadBand
** TheBigBad, TheEvilGenius - Yazen.
** TheDragon - Jinun, both literally and figuratively. Douren could count.
** TheBrute - Resshin, and perhaps Douren.
** TheDarkChick - Higan.
* FlashBack - A lot of characters explain their backgrounds this way.
* ForScience - Yazen has a deep, deep interest in science.
* GoodEyesEvilEyes - Zenya so much so that they are actually commented upon.
* GratuitousEnglish - Resshin/Barry loves this (shown in a different font in scanlations).
* HellishPupils - A taken in a series where demons exist.
* HeroicSacrifice - [[spoiler:Shakuyaku and Kagan]]
* HeWhoFightsMonsters - [[spoiler: Shinsuke becomes a revenge-driven rage machine after the death of Shakugan. He calms down after finally getting his revenge.]]
* HotBlooded - Douren
* HowDoIShotWeb - Shinsuke and his sword.
* ImportantHaircut - Inverted. Tama's hair grows longer when [[spoiler: Jinka absorbs so much energy that it feeds back into her and keeps him in demon mode.]]
* IncurableCoughOfDeath - Subverted. It looks like Shinsuke's heavy injuries from assaulting the Daiganshu gave him one these but then the next page shows he was just drunk.
* LaserGuidedAmnesia - [[spoiler: Senya can't remember anything of what had happened before he was sealed by the Mountain God until chapter 46.]]
* LightningBruiser - Douren.
* MacrossMissileMassacre - ... made of ''trees''.
* MadScientist - Yazen has shades of this.
* MagneticMedium - [[spoiler:Jinka and his yet-to-be-seen twin brother, because twins with the Fairy Eye "attract monsters" when they're together.]]
* MeaningfulName - "Shakugan" is "Shakuyaku" and "Kagan" mixed together: even the particles in the kanji for "Shaku" are made by smushing characters from their original names together.
* MissingMom - Tama's mom pretty much abandoned her. [[spoiler: Senya's mother was apparently killed.]]
* MyGreatestFailure: [[spoiler:Jinun sees the death of Senya's mother as this, which is why he put over a 1000 demons inside of him. So he wouldn't fail in protecting those he cared about.]]
* OhCrap - [[spoiler: When Tama realizes that the Mountain God has seen through her plans to involve the god in the battle against Jinun.]]
** In-universe, it seems as if dragons are met with an OhCrap moment by demons and humans alike every time they turn up.
* OneWingedAngel - All of Dangaishu's strongest fighters seem to have this as well as Jinka
* TheOnlyOneAllowedToDefeatYou - Shinsuke to Resshin/Barrie Zalmoa and Douren to Jinun.
* PuppyLove: Senya and Tsukiko's relationship seems to be going this way.
* TheStoic - Jinun and Senya.
* PoisonousFriend - Possibly the Maken sword to Shinsuke. [[spoiler:and Shinsuke to the main party after Shakuyaku and Kagan die.]]
** [[spoiler:Subverted when Arabuki stops Shinsuke from going into a murderous rage while fighting Resshin, which also stops Shinsuke's progression to PoisonousFriend.]]
* PunchClockVillain - Douren has shades of this being the most sympathetic priest.
* [[RaisedByWolves Raised by a Hermit and Demons]] - Jinka's childhood was spent with Kokugetsu Sai, a hermit and the demons that roamed the mountain that he had lived on.
* RedOniBlueOni - Douren's Red to Jinun's Blue.
* RoaringRampageOfRevenge: [[spoiler: Shinsuke was happy to finally be able to go up against Resshin.]]
* SharingABody - Shakuyaku and Kagan as "Shakugan", and unlike most examples, it's a permanent arrangement.
* SuperpoweredEvilSide - [[spoiler:Jinka]].
* [[spoiler:TakenForGranite: See TearJerker.]]
* TalkingWeapon - Arabuki, although it's more a case of HearingVoices.
* ThoseTwoGuys - Inga and Ouhou.
* TigerVersusDragon - Douren and Jinun, literally and figuratively.
* TimeSkip - Of roughly four months. [[spoiler: And then 8 years in chapter 53.]]
* TookALevelInBadass - Shinsuke goes from being a coward who has lackluster sword skills to Badass Abnormal. All of the characters undergo this, Shinsuke and Jinka's badass levels are perhaps the most obvious.
** Jinka's an extreme case of this. He goes from four tails at the start of the series to [[spoiler:a thousand! Deconstructed as this rapid rise in PowerLevels makes him go completely insane, starting part two, where the aim is to find him and cure him of his madness.]]
* WellDoneSonGuy - [[spoiler: Jinun has never shown overt affection towards Senya, and had his son address him as Master as opposed to father. This is because he saw that strength to accomplish his goals were all he could give him.]]
* YouCanBarelyStand - Repeatedly.
* YourSoulIsMine - [[spoiler: The Mountain Goddess informs Tama that the price for using her in battle would be to have either Tama or Jinka give up their soul to her for eating at the end of their journey.]]
* {{Youkai}} - Called "Katawara" in this series, which basically means "besides", but with the kanji for "darkness", therefore meaning "creatures (of darkness) who live beside this world".
** {{Kitsune}} - Tama and Kuzunoha. [[spoiler: Jinka becomes one with 1000 tails.]]
----