The northern continent's Hell Gate was believed to have been sealed by the hero three years ago by Shion Bladedarts. However, the seal has weakened during those three years to a point of allowing monsters to sporadically make their way through, and have begun to pose a threat to humanity once more.
In a current day, a radish farmer by the name of Touka Scott has been living a normal life with his childhood friend, Yuna Yunis, in the central continent's southern village of Cheza. As a way to protect his radish fields, Touka has been preparing for sudden monster attacks by building himself a pit-trap of bamboo spikes for monsters to fall into, but it ends up failing when a monster that appears at the farm isn't lured in by Touka's freshly roasted bacon. Hero Shion arrives to save the village from the monster, but after quickly disposing of it, the hero gets lured in by the freshly roasted bacon, and falls into Touka's pit-trap. In a shocking turn of events, the hero actually ends up dying to the trap's bamboo spikes.
With the hero gone, a new one will eventually need to emerge so that the Hell Gate can be sealed once more. A small necromancer girl named Anri Haynesworth was Hero Shion's companion that journeyed with him to Cheza village, and comes up with a plan to have Touka's soul transferred into the hero's body while Anri protects Touka's now soulless body in a tiny key-chain coffin. This action would mean that Touka would be able to play out the role of the hero using Shion's body, and be the one that saves humanity from the monsters. The catch? Touka acts like less of a hero, and is actually more of a pervert that loves the thighs of women. Much to Yuna's continued annoyance, Touka goes about showing this by trying to forcibly dress a women's legs using knee socks so that the thighs can show off their true beauty.
Together with Yuna and Anri, Touka's party of three head off on an adventure to reseal the Hell Gate, meeting new friends and companions along the way, and battling against any monster or enemy they come across.
Yuusha Ga Shinda (The Legendary Hero Is Dead!) is a series that Needs Wiki Magic Love.
- Accidental Hero: Blake the Twin Spear is the second flavor of this. Highly regaled as a mighty warrior who has defeated a hundred demons by himself, he's actually an incompetent idiot that just happens to be around whenever a lot of demons are killed.
- Always Save the Girl: Shion was so desperate to save Anri from mana deprivation death (Necromancers are human-demon hybrids who need a steady supply of mana or souls to survive) that he deliberately imperfectly sealed the Gate to the Demon Realm — the source of mana — so that it would open in a mere three years. Unfortunately, he badly underestimated how powerful the Demons would become in those three years, leading to a lot of bloodshed and devastation. Shion's guilt over this was so severe that he purposefully walked into Touka's trap in the beginning of the series.
- Big Bad: While the series has had a lot of villains, the ones who are ultimately behind everything are the four original Necromancers who killed the gods and took over the mortal world. They are still active too since Necromancers can extend their lifespans by consuming souls just like Demons. King Larkvlad is one of them, as is his subordinate Isaac.
- Body Horror: Touka is stuck suffering this after a Necromancer imprisons his real body and places his soul in the dead hero's corpse, eventually decaying to nothing more than a living skeleton, and spends an entire early arc working to get the body back to normal. After building up to a mana level of three he's capable of regenerating the body on his own, meaning he can now regularly be dismembered without it being a major plot point.
- Cerebus Rollercoaster: The story starts as a lighthearted thigh-centric fanservice and slapstick comedy. It quickly grows into a story full of political war, ancient conspiracies, a war between humans, gods, and demons, and lighthearted thigh-centric fanservice and slapstick comedy.
- The Chosen One: Double subversion... sort of. Subverted at first by killing the Hero Shion in the first chapter, however eventually the holy sword comes to accept Touka himself, and Touka is from then on considered to be the new Hero.
- Empire with a Dark Secret:Farom is ruled by the original Necromancers who killed the gods. Many of its citizens are actually undead puppets under the control of King Larkvlad, one of the four Necromancers. Shion and other Heroes who tried to stop Larkvlad when they learned the truth were forced to stand down and go along with the deception by Larkvlad threatening to unleash his puppets on the human population of the kingdom.
- Insane Troll Logic: Early on, putting socks on leg-shaped radishes is Touka's idea of being a real man. He's not alone on this though, as a couple background characters can be seen hiding similarly dressed radishes when Yuna calls him a pervert over it.
- The Necrocracy: Farom Kingdom is secretly ruled by a cabal of age old Necromancers, and a good number of its citizens are actually undead puppets controlled by them to keep any upstart Heroes who learn the truth about them from fighting back.
- Through His Stomach: Touka attempts to lure a monster threatening a friend of his toward a pit trap. Averted since said monster says it hates pork.