Kazusa made a full recovery after the wound Toma had inflicted upon her during the rescue mission. She got her revenge by spitting in his food. After the settling of everything that had happened, Kazusa revealed what had happened to everyone who was not in the Final Killing Game during a conversation with Kaiousei.
Everyone had woken up in the previous ruin of the SSoFF, which was now covered in more corpses. Whoever had knocked the entire facility out had killed more members of the SSoFF. The people killed included Takumi Nobushige, head of the Rescues division. With all of the administration gone, Kazusa attempted to stand up and take control of the remains of the group, but chaos reigned supreme. After a few weeks of no authority, Kazusa attempted to take a leadership role, but this time much more forcefully. With everyone finally calmed, she began to manage reconstruction of the facility. During this period, the phone call from Kaiousei and everyone else had come in. After this, motivation and morale increased in the group. After a while, something odd had come in. A message from an unknown location stated coordinates. Kazusa recognized these coordinates from the second killing game, and began to rally a team to go and find out more.
During the travel there, a roadblock was faced, heavily guarded by weaponised rioters. In an attempt to pass peacefully, conflict started and Bronte Sadayoshi was a casualty to the fighting. He had pushed Carson out of harm's way, but in doing so singlehandedly took on a grenade explosion. Eventually, Kazusa's group pushed through, eventually reaching past the roadblock and the building that was leaked to them. Around this time, the final trial was being completed, and Kazusa went in to find Kaiousei. After that, she was shot, and Toma was captured.
After telling this story, she showed the memorial to the two that was constructed in the Post-Rescue hall to Kaiousei. Kaiousei was quite saddened by this unfortunate series of events, but couldn't get herself to feel grief, as she had never really associated with Bronte. She dismissed Kazusa to go back to her work.
Kazusa was eventually assigned as Fuyashi's top subordinate, a position that she accepted. She continues to find information for the Future Hope Organization of people in need.