Kazuma is on his way home after buying a new video game that came out, when he sees a floating door in the middle of the city. When he opens the door, he sees a dungeon inside filled with monsters and other staple RPG elements. A mysterious app also appears on his phone showing his 'Stats'. This is every otaku's dream come true! (contains sexual situations and harem shipping)

What if Kazuma was the new Demon King? What if Aqua resumed her post in heaven looking for hero candidates from Japan to defeat Kazuma? What if someone named Kazuma Satou reincarnated into a world where the Demon King had the same name as him? What would happen if Satou, Aqua, Komekko, and Iris formed the most overpowered party in the history of the world? Hilarity, of course.

Kazuma Satou, once a promising young man, with great academic and athletic merit, lost his life in self-sacrifice. Meeting the goddess of water Aqua in the afterlife, he was given the chance to reverse his death, IF he defeats a demon king of another world. Seizing the opportunity, he embarks on a quest to defeat the demon king. (Set in an AU, with changes to lore and characters.)

YunYun ve que su clan y aldea fue destruida y ahora con la ayuda de Kazuma va a vengarse y mientras que eso pasa el destino Kazuma y YunYun aparte de la venganza ambos llegan a sentir sentimiento el uno del otro.

Kazuma has managed to wrangle is herd of cats into a semi-competent party, but his popular phase never arrived. However, Rin has noticed that both their parties are single, and decides what they really need is for their parties to date one another! Kazuma agrees, and what follows is a romantic farce that will definitely not cause an international incident.

"Dear Mother and Father, my adventures as an overpowered isekai protagonist proceed as expected. The masochistic knight is still crazy, the demented explosion maniac is still a loli, and the mentally childish goddess is still useless. Oh, also, I seem to have become a hentai rape orc, but that's just background noise at this point."

A cierta hora, cada noche, ellas tocan a su puerta.

(Remake) Luego de que la verdadera identidad del ladrón enmascarado haya salido a la luz, Kazuma se encuentra rodeado por el peligro que representa Claire, una noble importante y guardaespaldas de la princesa. ¿Tal vez su sinceridad y uno que otros golpes de suerte desarrollarán las mejores situaciones con esta noble? ¡Cortemos el cliché!

Takes place after vol 17 and it's continuation of the light novel involves the attack of the Demon Kings Daughter might will be rated M later Kazumin stuff.

Don't ya hate it when just when you're about to reach your favorite resturant during a wild storm you end up going to the afterlife. Sucks doesn't it. Watch as this poor soul makes her way through a crazy world that sure has a lot of weird expectations.

The adventure is now over, but another story now opens and it's one full of broken hearts.

An elite assassin's final act of bravery sends him spiraling into the afterlife, where he meets the bumbling Kazuma Satou. Reincarnated into a vibrant world of magic and madness, they must confront demons, wield dubious powers, and embrace a new kind of life (and death) filled with laughter, danger, and unexpected bonds.

A new dark creature stalks Belzerg, striking fear into all who cross her path...in theory. She's just not very good at that yet! But once Yunyun finishes her apprenticeship under General Wiz, she's sure to be an expert at raising zombies, contract negotiations, and logistics and resource management! Right?

[AU]Lalatina "Darkness" Ford Dustiness, a noblewoman turned adventurer, grapples with her masochistic tendencies and unrequited love for Kazuma. As her destructive behavior strains their party, she realizes the emptiness of her pursuits. With Aqua transforming positively under Kazuma's influence, Darkness contemplates a path to true fulfillment.

Es la historia de konosuba, pero como el titulo sugiere será con el final feliz de Kazuma con yunyun. (esta historia estara en re-escritura costante)

(LN 15 spoilers) (Crossposted on AO3) Being by far the most evil villain in Konosuba, Serena fully deserved her arguably worse-than-death fate, but Regina wants her used-to-be follower to have a second chance, so Kazuma and Serena talks even though they hate each other.

After learning about valentine's day from Kazuma, Megumin and Darkness were determined to give him the best valentine's day they can give, and maybe win him over in the process. But mysterious demon throws a wrench in their plans...

Kazuma and Aqua are tossed in a much more brutal, unforgiving world where there is no resurrection or second chances. This place functions much less like a game, the character's personalities are more grounded, and our hero meets and brings the original party together in a very different, but much more intimate way, with a lot blood and tears in between. (contains smut)

Short story compilation with ties to the sixth volume of my fic; as such, there may be spoilers. It's recommended—but not strictly necessary—to read the mainline fic before reading the stories in this compilation.

What if Kazuma and Luna fell in love with each other after months of flirting, Love awaits those who yearn for it. How would the whole town react to an up-and-coming adventurer on the Rise like Kazuma court and attract Luna, one of the well-known Guild Staff Members of Axel? It seems like an almost contradiction

The girls have been turned into a much younger version of themselves by one of the items in Wiz's store. It will take a while for Wiz to develop a cure for it, so in the meantime, Kazuma need to take care of them...

What happens to our boy Kazuma after being the butt end of everyone's joke for the last time and decides he's going to quit school and be a NEET once more. Decided to revive this fic on a whim, and who knows maybe it'll get the ending you all deserve.

"Si miras a una diosa con lujuria, una terrible maldición caerá sobre ti... ¿Lo oíste verdad? ¡No finjas que no me escuchaste! ¡Kazuma!"

Darkness' client is taking too many liberties; though, she doesn't mind. Commission, adult themes.

Kyouya Mitsurugi was the chosen hero of Axel, he had a promising party of six and together they were destined to defeat the Devil King that created the need for him to become the hero of this world. He is forced to contemplate what has gone wrong when he attends the wedding of the 'Last Crimson Demon'. One thing he'll learn though is it can always get worse.