Ep. 4: Lacia's violent hIE sister Lacia plans terrorism using the antibody network
Aired on February 3, 2018

4
Kouka, a violent hIE who identifies as Lacia's first sister, utilizes her command over the antibody network to orchestrate a terrifying act of terrorism. Upon discovering that Kouka's sinister scheme places Kengo in imminent danger, Arato resolves to intervene. He embarks on a mission to rescue Kengo, receiving assistance from Lacia during the operation. The narrative focuses on the threat posed by Kouka's control and the subsequent efforts by Arato and Lacia to prevent the catastrophe and save Kengo from harm.
Episodes
- Ep. 1 · Arato's normal life ends when he is attacked by a corrupted hIE on his way home.
- Ep. 2 · Lacia moves in with the Endou family after signing a contract with Arato.
- Ep. 3 · Arato Investigates Lacia's Disappearance With Ryou and Kengo
- Ep. 4 · Lacia's violent hIE sister Lacia plans terrorism using the antibody network
- Ep. 5 · Arato confronts the android politician Mikoto and a terrorist unit at the industrial center.
- Ep. 6 · Arato rescues Kengo while Memeframe faces internal strife and Methode prepares to act
- Ep. 7 · Lacia Takes on a New Modeling Job Promoting Human-hIE Equality
- Ep. 8 · Sleeping Princess Erica Burrows arrives at Arato's school amid Methode's attack on Lacia.