The group reunites at Takagi's house, an impenetrable fortress run by her parents and their army of workers, but being absorbed into a larger group becomes a huge concern.

Tempers flare in the house of Saya Tagagi. A Leader must be chosen, and a man from the group's past makes an unexpected return.

After an EMP wave shuts down all electronic equipment in a wide radius, Komuro and his friends must defend the mansion or risk losing all that matters to them.