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Lightnovel / Slave Harem in the Labyrinth of the Other World

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Michio Kaga was about to commit suicide and decided to search for a way to die on the internet, but then he found an odd site that asked a lot of questions and had a point-based system that allows you to create skills for a character. He took interest in it, and when he was done setting his character, he was asked, “You will now be transported to a world with the settings you chose. Coming back is not possible. Do you still accept?” Without thinking much of it, he pressed YES and found himself in another world with the skills he chose to have.

Slave Harem In The Labyrinth Of The Other World (異世界迷宮でハーレムを; Isekai Meikyuu de Harem o) is a 2011 fantasy Light Novel series, written by Sogano Shachi and illustrated by Shiki Douji. It was adapted into a Seinen Manga in 2017 with art by Hyouju Issei. It is serialized in Kadokawa Shoten's Shounen Ace magazine, and has been published in three bound volumes.

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Tropes found in the work include:

  • Achievements in Ignorance: For the entire population of residents in the New World. They're not aware that they're in an RPG Mechanicsverse, at least not entirely. What little they know about the world was discovered entirely by accident.
  • Affectionate Gesture to the Head: The primary non-sexual method Michio and his harem show affection to one another is to rub each other's heads, ears, etc., and everybody loves it.
  • Alternate Continuity: By the time chapter 22 of the manga rolls around, things begin to vary greatly from the source. True, the characters and their actions remain the same, but the timeline and context changes considerably.
  • Awesomeness by Analysis: Michio's Analyze skill, as well as select abilities from various jobs, enables him to embody this.
  • Badass Adorable: Michio's harem is staffed entirely by girls who are cute as a button, which is precisely why he bought them. Of course, each and every one of them is a mighty fighting machine, thanks to Michio's efforts.
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  • Bathtub Bonding: The protagonist's second favorite "team building" activity with his slave Battle Harem. Justified by the fact that in the world setting, proper baths are something only nobility can afford. So being ogled and fondled is considered a fair exchange for a level of pampering most can only dream of.
  • Battle Harem: The protagonist works very, very hard to buy female slaves to be his fighting companions while conquering labyrinths. He also greatly enjoys said slaves in the bath and bedroom...
  • Because You Were Nice to Me: All the protagonist's slave harem happily has sex with him, because he shows them through words and deeds that he truly treasures them.
  • Beware the Nice Ones: Michio's entire harem, including himself, are some of the most gentle, humble, and submissive people you'll ever meet in fiction or reality. Antagonize them at your peril.
  • Boobs of Steel: Despite her soft looks and large breasts, Roxanne is a fairly skilled hand-to-hand combatant.
  • Bounty Hunter: While not a professional one, Michio engages in spots of bounty hunting via the 'magical ID' mechanic (see Price on Their Head below) when he needs money.
  • Chekhov's Skill: To the point of recurrence. Many of the things Michio, as a Japanese teen, learned in home-ec, chemitry, or even his one and only visit to a beauty salon with his mother prove very, very useful in the new world, like cooking and making soap, from scratch.
  • Cool Sword: Durandal. It can be level-adjusted into weaker weapons, and its strongest form one-shots non-boss mobs.
  • Crapsack World: Played With. While this New World has a great many disadvantages, there are aspects that are superior to modern society on Earth. Crime of Self-Defense does not exist, and slavery, as an institution, is universally viewed as a Last-Second Chance for people who are in terrible straits to redeem themselves and make a better lot in life than they were given.
  • Crutch Character: Durandal and Ring of Determination is very powerful for a starter character like Michio.
  • Dark and Troubled Past: All the main characters, without exception, though they're not all revealed.
  • Death Seeker: Michio was this in the real world, but he seemed to have shaken it off.
  • Deliberate Values Dissonance: The moral compass of this new world is quite different from any modern country on Earth. For example, instead of imprisoning criminals, they are sold into slavery. The merits and demerits of this system are spelled out by the protagonist in the light novel.
  • Dirty Old Monk: A Buddhist priest who runs a kendo dojo so he can molest teenage girls definitely qualifies. Sadly, said dojo was the only place Michio could find refuge during his days in Japan.
  • Disproportionate Retribution: Michio, when receiving his reward for helping save Valle from bandits, noticed that somebody had swapped out the Bandit Chief's bandanna. When the culprit was found, he was sold into slavery at the price of 33,000 coins, half of which went to Michio, under the terms of the local law by the Village Chief. It's a bit more justified in the manga when the bandanna is revealed to be worth 20,000+, in the right market, but in the lightnovel, it was only worth about 500 coins.
  • Driven to Suicide: Not only did the protagonist start the story searching suicide websites so he could kill himself quickly and painlessly, but this is the fate of any slave whose master dies unless the master prepared a will beforehand stating otherwise.
  • Dungeon-Based Economy: Keeping labyrinths docile is such a daunting task that cities are often built around them, explorers sell passage to the upper floors, and sometimes, gate-keepers even collect a fare for adventurers to enter. There's also the fact that dropped monster loot can either be used for mundane tasks, like being cooked as the family's dinner, or sold on the open market...
  • Enemy Scan: Michio relies on his Analyze skill for a lot of things.
  • Exotic Extended Marriage: Despite lacking any kind of religious ceremony or fanfare, Michio is in an effective polygyny, and is very, very kind and faithful to his harem. According to the other wiki, this kind of arrangement was normal in Japan until 1970 so even if Michio's father didn't see it as a cultural norm, his grandfather certainly did.
  • Fanservice: The manga has two chapters dedicated to Michio and Roxanne doing adult stuff. It is pretty much expected since Hyouju Issei is an active doujinka and adult mangaka.
  • Food Porn: When the main characters get to cooking their daily meals, the process reads like something you'd watch on The Food Network.
  • Good People Have Good Sex: Michio, being a slave owner aside, is an inherently good and noble individual, and his harem has no complaints regarding the fact that he has sex with them. In fact, most of them actually approach him and seek the sex out, which he happily enjoys.
  • Half-Human Hybrid: Defied. As part of his pitch to sell Roxanne to Michio, the slave trader specifically spells out that beings of two different races can not produce children.
  • Happily Married: Despite lacking any religious ceremony or fan-fare, the harem setup Michio has is a de-facto marriage in many cultures, the practice even surviving to modern times, in certain remote places. Everybody in Michio's harem, including himself is very, very happy with the arrangement.
  • Happiness in Slavery: Invoked, lampshaded and often discussed. Michio goes so far above and beyond his duties as the master of his slave harem, that his slaves consider themselves living in the lap of luxury, and reciprocate in trying to make Michio as happy as they can, even going as far as to make themselves look as sexy as possible to him, which he really, really appreciates.
  • Heroic BSoD: Michio had a brief one when realized he can't return to the 'real' world.
  • Hotter and Sexier: Amazingly for a story that openly features sex-slaves, the manga is even more explicit than the source material. While the original lightnovel only hints at the fact that Michio has sex with his slaves, even barely giving any details of the girls' anatomy when Michio openly ogles them, the manga has Their First Time on screen in chapter 7 between Michio and Roxanne. The only thing seemingly keeping the manga out of the hentai section is the fact that Michio and Roxanne are under a blanket for most of it, and the rest of the time, their more delicate areas are out of view...
  • Interspecies Romance: Michio is a human, while none of the girls in his Battle Harem are, yet they have sex with each other, in a mutually loving commitment, on a regular basis.
  • Job System: While Michio can shuffle around his jobs with relative impunity, ordinary people doesn't seem to be able to do the same. Michio can adjust Roxanne's jobs but she seemed to be astonished about this, suggesting that such ability is rare.
  • Leaked Experience: Abused and exploited. While some nobles abuse the "party" system's shared exp pool to level their children while keeping them out of labyrinths, Michio exploits it by having the bonuses of his jobs and his harem members stack, giving them all a major boost in their level grinding, accomplishing things in a matter of days, if not single battles, that most of the population couldn't do in years.
  • Life Drain: Alongside Mana Drain, Durandal can do both, enabling Michio to stay longer in the dungeon with mental exhaustion and carrying capacity as his only limiting factors.
  • Like a Duck Takes to Water: The protagonist adapts to this new world, and buys his first Sex Slave in less than two weeks.
  • Little Bit Beastly: The "Beastkin" races all have subtle animal traits like animal ears and tails.
  • Living Structure Monster: The "labyrinths" are actually living beings. They remain docile only as long as adventurers go inside them to hunt monsters, and they feed on anyone who dies inside them. If adventurers don't go inside labyrinths for an extended period of time, the labyrinths send out monsters in the surrounding area to seek out and attack people. In fact, adventurers strong enough to clear an entire labyrinth (50 floors minimum), thus killing it, are so legendary as to become local lords, and the last "Hero" to do so became the local emperor.
  • Made a Slave: Roxanne was sold into slavery because her family couldn't afford the year's taxes.
  • Merchant City: In addition to the Dungeon-Based Economy, there are cities built exclusively to market unique products. The most famous is Palmasque which specializes in glass-artistry, especially their mirrors. The city requires merchants, traders, and visitors to enter at their Adventurer's guild and then pass through a border check-point where a small toll is placed, just to go in and browse. The citizens and artistes require a special permit to leave, even if it's just for a short time, so that the city doesn't lose its talent or monopoly on its exquisite works.
  • Morph Weapon: Durandal, Michio's sword, can be level-adjusted; It will morph into a weaker sword if set to a lower level.
  • Mundane Luxury: Sometimes combined with Simple, yet Opulent. The protagonist's harem is shocked and amazed at Michio's cooking and the fact that he bathes with them on a regular basis, in a large custom-made bathtub, because the concept of a personal bath is so ridiculously expensive that only nobility can afford it, and we're treated to a "personal bath" late in the story, a wooden barrel. In addition, many of the cooking ingredients, although common to the reader, are usually won from rare monster drops on high-level labyrinth floors, or boss monsters.
  • Necessary Drawback: There's a very, very good reason wizards are rare in the world setting and people avoid using magic too much. Using too much MP too quickly leaves the unfortunate soul who did so feeling uncontrollable cowardice and suicidal depression. Furthermore, unlocking the wizard class requires making a person go through this deliberately. The only method known by the population at large is buying an extremely expensive "medicine" that has this effect on someone. Michio discovered this by accident when testing his "Mana Sacrifice" ability, and he noticed Sherry suffer it when she tried enchanting for the first time, and was suicidally depressed when she succeeded.
  • No Body Left Behind: Defeated monsters vanish in a puff of smoke and leave loot behind. Nobody in universe understands how this works, or cares to learn.
  • Nobody Poops: Subverted. In chapter 38, one of the selling points for the house Michio intends to rent is that someone, somehow, managed to install a fully-functional, flush-able toilet. The water has to be poured into the tank manually, as there's no running water in the society, but the toilet itself works just fine. A second toilet was planned on the second floor but abandoned, and this opening is where Michio has his custom-made bathtub installed, for easy drainage.
  • Our Elves Are Different: While their appearance and personality are mostly the same as in other fictional works, elves in this setting have lifespans around the human average. In fact, when an elf matron who has 107 years of age is introduced, she clearly looks the part of a centennial, and everyone wonders how she managed to stay alive so long.
  • Petting Zoo People: Roxanne, Michio's first slave, is a beastkin with floppy dog-like earlobes.
  • Pragmatic Adaptation: The manga plotline, while faithful to the source, does move the pace more quickly by removing a lot of what the mangaka considers superfluous. For example, Michio has 10 days to round up the funds he needs to buy Roxxane in the light novel, turning to bounty hunting on day 9, out of desperation, while in the manga, he only has five, and turned to bounty hunting on day 3.
  • Price on Their Head: Dead criminals (usually people with 'Bandit' as a job) can be turned in to the local law enforcement for bounties. It's a pretty clean procedure, too: dead bodies will eject their magical 'identification card' some time after death and law enforcement need only these cards to confirm the bounty.
  • Reality Ensues: On occasion. Even in the RPG-Mechanics Verse, the mundane aspects of the world setting would fit nicely into reality. Citizens of a nation have to pay taxes, even the adventurers who go into labyrinths are not exempt. Simple healing medicines and magics only deal with light wounds; advanced medical care would be required for anything more serious. In a society with no electricity or running water, proper hygiene is a challenge. Oh, and simply because two species look similar does not guarantee that they're genetically compatible enough to produce offspring. Michio's girls may all be very aesthetically pleasing, but they are all of a different species than he, and he can't get them pregnant even if he wanted to. Though it would be fair to say it isn't a lack of trying that's to blame.
  • RPG-Mechanics Verse: The protagonist is the only one who's fully aware of it, as he can see the levels of everyone in his party, including himself. The rest of the population can only tell their professions, except for the "explorer" class which has a visible change.
  • School Bullying Is Harmless: Defied. The reason the protagonist starts the story searching suicide websites? He's been so viciously bullied that he's had to take up kendo and karate to defend himself since elementary school, and his own father joined in on the abuse. When he showed he was able to defend himself, everyone ignored him as if he didn't exist...
  • Sex Slave: Downplayed but present. The protagonist buys his female slaves primarily so he can enjoy them, sexually. The slaves are all well aware of this, and happily consent, usually in advance.
  • Slave Collar: Roxanne has one, although it isn't clear if it's a magical collar or a mere decoration (since her status as a slave is reflected in her magical 'identification card').
  • Social Services Does Not Exist: Even in Japan's (where the story is written and initially takes place) notorious "don't trouble others" society which tends to ignore bullying and domestic or parental abuse, as long as nobody makes waves, when an elementary school student's father steps in to take the bullies' side and abuse the boy too, this tends to bring the entire wrath of the Japanese pantheon down on said father, in the form of every kind of legal and moral authority. In the story, the poor boy had to go to a kendo dojo and learn how to defend himself instead because nobody else would help him...
  • STD Immunity: Averted. Prostitution is shown to exist in the early chapters, and Michio is specifically advised not to peruse such services by Allen, the slave merchant, precisely because of this issue. The manga even shows some prostitutes on-screen and they are clearly not healthy.
  • Supporting Harem: Discussed, lampshaded, invoked, and justified. While it is true that Michio does not play favorites, in any way, shape, or form, Roxanne is his number one slave, which he lampshades on numerous occasions. As such, she has full authority to command the harem in his stead, should the need arise. The justification is that Roxanne has earned the position by proving herself the most skilled, talented, and experienced warrior, as well as the most devout.
  • Time to Unlock More True Potential: Unusual for a seinen series, this is indeed the case. Michio is always looking to boost not only his own abilities, but those of each and every member of his Battle Harem. Every time he succeeds, the girls are awestruck and ecstatic.
  • Trapped in Another World: The protagonist cannot return to Earth, though he was warned.
  • What Might Have Been: In universe. Chapter 9 of the official storyline, in the light novel, shows Michio what would have happened if he took the Village Chief of Vale up on his offer to "comfort" the widow of one of the defenders who was struck down by a bandit chief, said widow being the wife of a relatively high-ranked retired hero. Michio would have unknowingly sired a son, and the two would meet 10 years after the start of the story.
  • Wrong Genre Savvy: Reconstructed. The entire population of the New World where the protagonist finds himself is almost completely unaware of being in an RPG-Mechanics Verse. They do know such things as "levels" exist, but have no way to measure them.

Alternative Title(s): Isekai Meikyuu De Harem O

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