Harumi explains to Kazari that she used the Level Upper Network as an alternative supercomputer as she wasn't allowed to use the Tree Diagram supercomputer, assuring Kazari that she will release everyone once she's done and giving her a cure program. When she is roadblocked by the AntiSkill, she uses the Level Upper's Administrator power; Multi-Skill, to utilize the various abilities of the victims to defeat them. Mikoto arrives and battles Harumi, who blocks her every attack until she lets her guard down, during which Mikoto gets close enough to shock her. In the process, Mikoto experiences flashes of Harumi’s memories. In the past, Harumi was assigned by her boss, Gensei Kihara, to be a teacher to a group of orphaned children, known as Child Errors, to prepare them for an experiment, growing fond of them in the process. However, the experiment went horribly wrong and the children ended up in comas, with Kihara choosing to cover it up. Harumi explains that she wanted to find a cure to save her students by using Tree Diagram but was denied every time, which led to her creating the Level Upper Network. Her anger soon causes her to lose control of the network and fall unconscious, and a strange fetus-like creature emerges from her head.