Kazuma is a NEET who spends his time playing RPGs all day. One day after a fatal accident he is given the chance to reincarnate as a new person in a fantasy world, promised that he will retain his memories and it will be like the RPGs he usually plays. Fantasy RPG worlds were so dangerous, few choose to start their new life in them so the population was dwindling. Thinking it would be the life of his dreams, Kazuma accepts but ends up taking the cheeky goddess Aqua with him. Together they start their new life and as they get stuck living in the stables, struggling to make a living, he finds out it's not so rosy after all.

This is one of those comedy shows aimed at the male audience mainly with Kazuma surrounded by girls of course although this time, their personalities are not quite your cliche cast of personalities. Instead of a party full of competent skilled heroes, we've got a whole group of clumsy, silly characters. There's Megumin, a self-proclaimed great mage who refuses to cast any other spell apart from the most powerful fire spell but ends up exhausted afterwards. Then there's the crusader Darkness who seems to be full of justice, playing the tank role to protect players but in actual fact, she's actually a masochist. With no one wanting either of them in a party, they end up grouping together with Kazuma and Aqua.

The show's silly twisted "real world" look at fantasy RPGs can be really fun to watch. 

Sequels

A later movie "Legend of Crimson" features Megumin and her hometown, focusing mainly on her backstory and it's not too bad.

S3 Kazuya gets to meet the royal side of Darkness' Dustiness family and just when he thinks he's set for his Isekai life, things don't go quite so well for him and his party. Our reluctant heroes continue to seek a way for the easy life. Another fun wwatch focusing on Darkness mostly.