In a world where humans coexist with androids called Neans, a group known as the Immortal Nine rises up against society. Tasked with disposing of the revolters, a Nean named Rouge Redstar (aka Metal Rouge) and investigator Naomi Orthmann head to Mars to track them down…but first, Rouge wants some chocolate.

Having just moved from Tokyo to Hokkaido, high school student Tsubasa Shiki decides to explore the picturesque winter landscape he could never experience in the nation's capital. It only takes a moment for Tsubasa's idealized view of Japan's northernmost prefecture to crumble, as the sheer cold and frigid air quickly overwhelm him. While trying to find the way to his new home, Tsubasa runs into Minami Fuyuki—a talkative and friendly Hokkaido native who, despite the cold, is wearing a short skirt. The girl wastes no time in striking up a conversation, and Tsubasa comes to realize that the winter weather is not all that is too much for him to handle. The next day, Tsubasa is shocked to learn that not only is Fuyuki in his class, but her seat is also right next to his. Swept along by Fuyuki's persistent advances, the young man soon becomes captivated by both life in Hokkaido and the beautiful girl determined to get closer to him. As he deepens his relationship with Fuyuki and meets other fashionable girls from his school, Tsubasa finds out that Hokkaido gals truly are adorable.

High school student Rakurou Hizutome has a peculiar hobby of playing poorly made games—ones that are unbalanced or are filled with so many bugs that make them borderline unplayable. The few who share his hobby might recognize him by his in-game name, Sunraku. For his next game, Rakurou is recommended Shangri-La Frontier, a popular and well-received virtual reality game as a breather from the terrible games he has been playing recently. Once he boots up the game, Rakurou decides to sell off most of his starting gear to gain extra money, leaving himself with only a pair of boxers, a bird mask, and some weapons. He is instantly hooked as he meticulously levels up his avatar. However, after encountering some intimidating monsters, he realizes that he may have underestimated the challenge that a mainstream game can offer. As Rakurou progresses, he must draw on all the skills he has perfected from his previous gaming experience. Before long, Sunraku's eccentric playstyle takes Shangri-La Frontier by storm.