Konasuba takes the isekai genre and slowly roasts it over an open blast furnace.
Start with the MC, Satou Kazuma: Teen hikikomori. Technically not a NEET, because he is enrolled in school but stays home and plays video games. While he's on a short trip to get a limited edition of a video game, he dies thinking he was saving a cute classmate. He ends up in front of a goddess that offers to isekai him to a fantasy world where he will defeat the demon king. Pretty standard. She even gives him a catalog of the various items he can take with him, and his decision is based on petty revenge. Why. You have to meet the goddess to understand.
Aqua, the goddess of water and healing (including reincarnation and resurrection) starts harassing Kazuma about the stupid way he died. All of his family, according to Aqua, laughed at him and how he died. He slowly got pissed off and got angrier the more she said. He made his decision on what he wanted to take to this new world: The Goddess Aqua.
Aqua was, for the most part, good at her duties in the heavenly realm, but not so much when the person she was helping on to the next step didn't follow the script. She grants his wish, realizing too late what she did. So now her and Kazuma are in a medieval village and become adventures. Typical, but they had no money. Aqua does what a goddess seems good at: Panhandling, and raises the funds to register at the guild as adventurers: Kazuma, an average adventurer whose only real skill is his luck, so the bottom of the barrel. Aqua, aside from low intelligence, has a very high rating in magic (she IS a goddess, after all) and becomes a high level Arch Priest at the start. She is great with healing magic and sending the undead to their final rest. It's at these times Kazuma almost forgets that she's an airhead, but a real goddess. It doesn't take her long to remind him that she's a blue haired blond.
As time progresses and they get their first subjugation quest, they realize that they need a larger party. Enter a 13 year old arch wizard named Megumin. It turns out she only knows what spell: Explosion! Even then, it takes so much magic energy from her that she can only perform it once a day. She's cute, but her single spell ends up preventing her from joining other established parties. She hungry (literally) and desperate. Still, she helps the party finish their giant toad quest, although she does end up being a potential meal for a surviving toad.
So the party is a Arch Mage, and Arch Priest, and a noob adventurer. The only thing that really helps Kazuma is he can learn any skill because of his status, which he immediately starts adding new skills at every chance. The chance comes when a buxom crusader asks to join the party. Lady Lalatina Ford Dustiness, known as Darkness, is just the paladin they need... until they find out she put all of her skill points into defense, and none on offense. She couldn't hit the broadside of a barn with her broadsword, but she makes a great meat shield. She makes such a good shield because she has a special ability: she's a masochist!!! (yes, three exclamation points)
Once assembled, they become a dysfunctional party: they finish their quests, but too often, the collateral damage they inflict costs them more in restitution than the reward.
Kazuma rides herd on these women as they work their way to destroying the Demon King's generals. By the end of season 2, they've successfully removed 3 of those generals.
The story is a great satire of the isekai genre. What Ranma ½ was to the macho martial arts anime, Konosuba is to isekai. But it's not always parody.
The first thing you discover is, even in this parody, there is a lot of personal growth, especially with Kazuma. He constantly complains about his dysfunctional party, at one point, even trading places with another adventure that is jealous of the beautiful women that follow him, and discovering what a real party does. In that arc alone, as short as it is, he goes from being a luggage carrier to becoming the party's MVP for that quest. He does that by using the skills he's learned, and the experience of working with a dysfunctional party, to stand out and help the party complete the quest without any casualties. He's a low rank adventurer, so he learns all his skills from the bottom up. For example, the mages that he encounters skipped learning basic magic to jumping to intermediate magic. In dealing with the goblin quest, he saves them time and again using that basic magic he learned. He came into that world with nothing other than a slightly used goddess past her warranty date, and started adding new skills. While he mostly uses his steal skill to remove ladies panties, it comes in handy other times, like when he dueled with a hero and stole his magic sword. As mentioned, he also learned basic magic from the ground up, and coming from a non-magical world, is able to think outside the box and use it as his easy out. The only skill he came to this world with was his experience as a gamer, so he had a good idea what needed to be done. He treats everything as if it were an RPG, and grows because of that. Even at the end of the second season and into the movie, he is still less powerful that a reincarnated slime, some kid that was zapped into another world with just his smart phone, or a game developer that ended up in his own game and became an overlord. Kazuma is the prototype for isekai protagonists like Naofumi, the Shield Hero and or Hajime in Arifureta. They became overpowered (can't be a good isekai otherwise) but they started at the bottom and learned their powers.
