The novels center on a bar called "Nobu"—located in Kyoto, Japan, but with a door that is connected to the bar in another world. The visitors include denizens of the other world, and customers seek out its excellent "Toriaezu Nama" ale and cuisine. (Source: ANN)

The game and anime follow Kon Hokaze, a boy who embarks on a journey from our world to an alternate world known as Mira, which is full a mysterious energy known as Alma. After saving Princess Ecarlate from attackers, he soon finds himself in the middle of a struggle around Alma.

Poor Shinichirou Asano has the worst of luck. His parents abandoned him and ran off to Europe. If that isn't bad enough on its own, they barely left him any money to take care of himself. In order to pay rent and keep a roof over his head, he has to work. Unfortunately, he was just fired from his last job and as a high school student, he doesn't have many other prospects. One evening, he's attacked by a centipede monster on his way home. Shinichirou is saved by a mysterious girl with a bow and arrow, who he later discovers is Sakuya Shimazu, a beautiful student who attends his school. But when he later helps an injured girl, he discovers two things. First, the injured girl isn't human at all but rather a nekomata, a two-tailed demon cat. And second, Sakuya comes from a family of exorcists, who've protected humanity from rogue monsters and spirits for generations. Because Shinichirou was responsible for releasing the nekomata, Sakuya enlists his help in recapturing the demon, but that's just the beginning of Shinichirou's relationship with Sakuya. It turns out the Shimazu family needs a housekeeper and it just so happens that Shinichirou excels at cooking and likes to clean! It may not be his dream job, but if it pays the rent and puts food on the table...

Video games, especially puzzle games, were always at the center of Konomi Kasahara's life. However, upon entering Hanamiya High School, she decides to break away from this lifestyle. As Konomi wanders the halls in search of a new activity to engage herself in, she stumbles upon a gigantic wall owned by the school's rock climbing team. Fascinated, she attempts to scale the wall, discovering that she can use her puzzle-solving skills to help her reach the top. Certain that she has found her calling, Konomi immediately joins the club. As she strives to improve her climbing skills, Konomi, alongside the rest of the Hanamiya Climbing Team, will learn what it truly means to be a "sports climber" and work to achieve victory in the upcoming competitions. [Written by MAL Rewrite]