Haruki Nakano lives an average high school life, except for the fact that his mother is overseas and he shares an apartment with his four sisters. There's the oldest, Mutsuki, who has a bad habit of falling asleep in his bed, the junior high school student Yayoi, who hits him whenever something happens, and then the grade school twins, Uzuki and Satsuki, who love to play pranks on their older brother. Stuck in a house with four girls, Haruki has to deal with all sorts of trials. From going grocery shopping, watching scary movies, to kissing practice, life is never boring in Danchigai!

Though they couldn't be any more different, love has managed to blossom between Hajime Tsunashi, a hardcore otaku who shuts himself in at home while making a living off his blog, and his wife Kaoru—a hard-working office lady who, in contrast, is fairly ordinary, albeit somewhat of a crazy drunk. As this unlikely couple discovers, love is much more than just a first kiss or a wedding; the years that come afterward in the journey of marriage brings with it many joys as well as challenges. Whether due to their quirky personalities or the peculiar people surrounding them, Hajime and Kaoru find themselves caught up in a variety of baffling and ridiculous antics. But despite the struggles they face, the love that ties them together spurs them to move forward and strive to become better people in order to bring their partner happiness.

The Tsunashi couple is as lively and offbeat as ever. Hardcore otaku shut-in Hajime and workaholic office lady Kaoru still get themselves into hilarious situations thanks to both their own eccentric natures and the bizarre group of friends surrounding them. After learning about Kaoru's pregnancy, Hajime works harder than ever to become a good husband and a worthy father. Meanwhile, Kaoru reflects on their relationship and remembers all of the trials and tribulations that brought them closer. The two of them continue to put their best foot forward in their lives and their marriage—all for the sake of long-lasting, selfless love.

The story follows the everyday life of Somera Nonomoto who can use the strongest kenpo, Nonomoto Mahou-ken, which is inherited from her mother with her younger sister Kukuru. (Source: Crunchyroll)