KonoSuba follows Kazuma Satou, a young shut-in who dies in an embarrassing accident and is given the choice to reincarnate in a fantasy MMORPG-like world. He chooses to bring the goddess Aqua with him, only to discover she is incredibly useless. Together, they form a dysfunctional party with an explosion-loving mage and a masochistic crusader to defeat the Devil King, though they mostly struggle with debt and ridiculous mishaps.

The main party consists of four members: Kazuma Satou, the cynical and luck-dependent adventurer; Aqua, the simple-minded and often troublesome Goddess of Water; Megumin, an Archwizard who can only cast one devastating Explosion spell per day; and Darkness, a Crusader with high defense but terrible aim who enjoys taking damage.

The recommended watch order is: Season 1, followed by the Season 1 OVA, then Season 2, the Season 2 OVA, the movie 'KonoSuba: Legend of Crimson', and finally Season 3. There is also a spin-off series focusing on Megumin titled 'KonoSuba: An Explosion on This Wonderful World!' which can be watched after Season 2 or the movie.

Aqua is statistically powerful with high magic stats and healing abilities, but her low intelligence and terrible luck often lead the party into debt or trouble. She spends her skill points on party tricks instead of useful combat skills and constantly creates problems that Kazuma has to solve, earning her the affectionate nickname of the 'useless goddess'.

Megumin is obsessed with 'Explosion' magic, the most powerful offensive spell in the world. However, she refuses to learn any other magic and pours all her mana into a single cast. This leaves her completely immobile and useless after using it once, requiring her party members to carry her for the rest of the day.

Yes, KonoSuba is widely considered a deconstruction and parody of the Isekai (trapped in another world) genre. Unlike typical overpowered protagonists, Kazuma is weak and cynical. His 'harem' is dysfunctional and problematic, and the world mechanics often subvert expectations for comedic effect rather than fulfilling power fantasies.

Seasons 1 and 2 and the movie 'Legend of Crimson' were animated by Studio Deen (with J.C.Staff handling the movie). Season 3 and the Megumin spin-off were animated by Drive. The change in studios has maintained the show's distinctively loose and comedic art style which fans appreciate.

The anime is still adapting the light novel series. In the source material, the party does eventually face the Devil King, but the journey is filled with detours. The anime currently focuses on their misadventures and battles with the Devil King's generals.

Kazuma learns a basic thief skill called 'Steal', which allows him to snatch an item from a target. Due to his exceptionally high Luck stat, he accidentally (or sometimes intentionally) tends to steal critical items or, most infamously, the undergarments of female characters, leading to many comedic and awkward situations.

Yes, the original light novel series written by Natsume Akatsuki and illustrated by Kurone Mishima has concluded. It spans 17 volumes, offering a complete story for fans who want to know how Kazuma and his party's adventure ends beyond the anime adaptation.