Ah well for a brief synopsis the world of Konosuba is basically about a boy who dies and gets transcended to another plane of existence and gets to enter a large scale fantasy world like the games he played since the protagonist Kazuma is a shut in teenager who spends all day playing mmos all day until he dies trying to save a girl in real life, he gets sent to a sort of waypoint in space and time where he meets a goddess of the world whom embarks journey with him as well as a few other adventurers. the anime plays out like a fantasy RPGs. Sword and sorcery, classes, leveling up, it all takes place in a sort of hub city full of other adventurers taking out special contracts for pay so in a way everyone is a merc of a hero wanting to build fame and save the land from the devil-King the main antagonist. It's a very funny anime not like the other similar styled ones, lots of dark, ironic, and crude humor relatable to that of many others lol, the main 4 characters are all lovable and hilarious when the moment is perfect. Each have their quirks and weaknesses and interesting personalities, it's a fun little anime to get involved in, I highly recommend trying it out, if you're a fan of warcraft, Sao, elder scrolls, final fantasy, Dungeons & Dragons, or any other fantasy epic you'll love the universe of Konosuba, it's on Crunchyroll if you have one or you can try finding some stream sites via Google like Kissanime