A brother and sister discover the digital world is more than 1s and 0s when a living creature arrives out of the family computer. The adventures of a group of children start with the appearance of a Digital Monster in the real world.

(Source: ANN)

Far in the future, the lifeforms known as Gadoll suddenly arose as a threat to humanity. The last surviving humans on Earth confine themselves to the Tank, a lower district in the giant mobile fortress Deca-Dence. While the Gears who live on the upper floors are warriors who go out to fight as part of the Power, most Tankers are content to provide support from the backlines, butchering Gadoll meat and reinforcing defenses. Natsume is among those who would rather go to the front lines; undeterred by her prosthetic right arm, she seeks to join the small number of Tanker soldiers who join the Gears in combat. But despite her peers at the orphanage each receiving their work assignments, Natsume’s enlistment to the Power remains unapproved. In the meantime, she begins a job as a cleaner in an armor repair team led by the hard-nosed and apathetic Kaburagi, who seems to be more than he lets on. Though initially cold to his idealistic subordinate, he soon recognizes in her the potential to upset the status quo of the world. As Natsume’s new mentor, Kaburagi prepares her for the special and unique role as a game-changing bug in the system. [Written by MAL Rewrite]

With her previous triumphs under her belt, Leila Malcal has now been promoted to Lieutenant Colonel and commanding officer of W-0. After having foiled an attempt to kidnap the General of the European army, she recruits the three perpetrators in order to make up for the lack of W-0's pilots. Ayano Kosaka, Yukiya Naruse, and ringleader Ryou Sayama accept, in hopes of finding a place to belong. When they are ordered to perform a commando raid by dropping into enemy lines, Leila decides to join them to prevent unnecessary casualties.

As the unit rushes into the fight, Akito finds himself possessed by an uncontrollable lust for violence, slaughtering anyone that gets in his way. Little does he know, he is soon to come face to face with the one responsible for placing the bloodthirsty curse upon him, someone he is far too familiar with...

[Written by MAL Rewrite]

Fuutarou Uesugi is an ace high school student, but leads an otherwise tough life. His standoffish personality and reclusive nature have left him friendless, and his father is debt-ridden, forcing his family to scrape by. One day during his lunch break, Uesugi argues with a female transfer student who has claimed "his seat," leading both of them to dislike each other. That same day, he is presented with a golden opportunity to clear his family's debt: a private tutoring gig for a wealthy family's daughter, with a wage of five times the market price. He accepts the proposal, but is horrified to discover that the client, Itsuki Nakano, is the girl he confronted earlier! After unsuccessfully trying to get back on Itsuki's good side, Uesugi finds out that his problems don't end there: Itsuki is actually a quintuplet, so in addition to her, he must also tutor her sisters—Miku, Yotsuba, Nino, and Ichika—who, despite the very real threat of flunking, want nothing to do with a tutor. However, his family's livelihood is on the line so Uesugi pushes on, adamant in his resolve to rid the sisters of their detest for studying and successfully lead them to graduation. [Written by MAL Rewrite]