Much of Japan has been swallowed by Yokohama Station, a mysterious series of buildings that’ve been around for as long as anyone can remember. Hiroto's always sought a purpose, but the one he finds may not be the sort he'd hoped for. (Source: Yen Press)

A WORLD INSIDE ​All Hiroto has ever known is a life on a tiny coastal speck of Japan. Much of the country has been swallowed by Yokohama Station, a mysterious, ever-growing series of buildings that's been around for as long as anyone can remember. The few who live outside its many entrances have never seen Inside and know only rumors and legends of the station's interior. That all changes when Hiroto is given an 18 Ticket, a mysterious item that lets him enter the massive complex for five days. The young man has always sought a purpose, but the one he finds may not be the sort he'd hoped for... (Source: Yen Press)

The sci-fi comedy manga centers on Sanpo, a junior high school girl who loves inventions and who meets a space creature named Nuno. Sanpo gets involved with Nuno's search for "space artifacts," super technology from space that are scattered around Earth. These "space artifacts," which are believed to be able to destroy Earth with a single switch, start to cause trouble in Sanpo's daily life. With Sanpo's tech skills and Nuno's knowledge, the two take on these "space artifact" incidents. (Source: Anime News Network)