April. A second year high school student, Arato had a normal life he spent with his friends Ryo and Kengo. Until that night. On his way home from shopping, Arato is attacked by a corrupted hIE, but a …

After binding an owner contract with Arato, Lacia has come to live with the Endo's. Arato's sister Yuka has completely accepted Lacia, and even enters her into an hIE modeling audition. Meanwhile, Ara…

Despite his awareness of analog hacking, Arato can't help himself from being drawn to Lacia. Amid all of this, Lacia is "kidnapped" right in front of Yuka. Arato is upset with the police and their unw…

Kouka, the violent hIE who calls herself Lacia's first sister. With her control over the antibody network, she is planning to carry out a horrifying act of terrorism. When Arato learns that her scheme…

Arato arrives at the industrial promotion center which is the target for the antibody network's terrorist attack. He heads up the stairs and sees the android politician Mikoto his father developed, wh…

Arato manages to rescue Kengo from the calamity at the industrial promotion center. However, even after returning to normal life, he finds himself consumed by the ever deepening mysteries. Meanwhile a…

Lacia has a new modeling gig. It is an image commercial to promote a new type of relationship between hIE's and human beings, one in which people view hIE's of the opposite sex as an equal partner.

Having made a contract with Shiori, Methode suddenly attacks Lacia while she is filming a commercial. As the circumstances surrounding Arato and Lacia are about to shift again dramatically, a new tran…

Shiori puts her plan into motion. At this rate, Arato will lose ownership of Lacia. "Mr. Arato, please allow me to be with you." This unexpected plea from Lacia moves Arato, and he heads to Chubu Inte…

Arato is given two weeks of suspension after the fight between Methode and Lacia leaves him with paying 4.5 million yen worth of damages they caused. In order to apologize to his father Kozo who offer…

Methode abducts Yuka right in front of Lacia. Arato and Ryo head to rescue her, but standing in their way are all of the hIE's in the experimental city who have been infected by Ginga Watarai to act l…

Ginga Watarai's death puts an end to the incident at the experimental city. During all of the chaos, Arato had revealed his feelings to Lacia which she accepted. Yuka has mixed feelings about this sud…

After being summoned by Erika to the Burrows estate, the Lacia-class hIE's fight entered the next phase. As each of them contemplated their next move, Kouka felt her possibility for a future quickly c…

Kouka carries out an antibody network terrorist attack against the Next-Gen Society Research Center on her own. Kouka's overwhelming destructive power is streamed around the globe, inspiring fear and …

Kengo is arrested by the security police in connection to Kouka's terrorist activities. Arato decides to save Kengo and gives Lacia the order. Following the plan she has devised, Arato finds himself f…

Affected by Kouka's destruction, Snowdrop moved up her own plans, taking over the Mitaka transformer substation to secure a steady energy supply and bringing disaster to the surroundings. Arato and La…

Lacia's secret is revealed. Arato is unable to handle it and steps away from Lacia. Defenseless on his own, he's captured by Ryo and Methode where he could do nothing but watch the monitor as Snowdrop…

Pushed by Shiori and Yuka, Arato decided to face Lacia once again. If his last order was still in place, Lacia should be trying to stop Snowdrop. With this thought, Arato heads towards Mitaka, a place…

It has been two months since the tragic events in Mitaka. The world returned to some semblance of normalcy, and Arato and Lacia lay low as they prepare for whatever may come next. However, their brief…

Super intelligent AI have spurred society to change. As the fight surrounding Arato and Lacia escalates, the leaders of the old guard discuss how they could maximize their own profits. Among the parti…

The super intelligent AI Higgins. The core of Memeframe, one of the keys to humanity's future, and the creator of Lacia. Arato and Lacia traverse through a giant underground facility in order to conta…

Once again, Methode appears to stand in the way of Arato and Lacia down in the underground facility containing Higgins. They must also be wary of Snowdrop who had been sent there by a rival super inte…

Snowdrop appears in the underground facility as some sort of hybrid between bird and person, a strange new creature created by a super intelligent AI which no longer needed humanity to exist. Lacia at…

Arato and Lacia walk towards the heart of the Higgins storage facility in order to choose a future. The two act like one as they help and support each other. However, damaged from the intense battle, …