Several years after the showdown with Naioro, strange news reaches the ears of Yuri Amakubo; the scientist behind the ExS-TIA system. On a remote island in the middle of nowhere was a woman who was the spitting image of her older sister Kaede, who had previously been defeated in battle.
With Souma in tow, Yuri immediately sets of for this island to ascertain the truth for herself.

Yuri Amakubo (CV: Ryoko Tezuka)
The female scientist behind the ExS-TIA system. Mature and level-headed on the outside, but a maiden at heart. Possesses a keen instinct.

Souma Shihou
Boyfriend of Marina Katsuragi, who once fought as an ExS-TIA. At Yuri’s request, he agrees to travel with her to the island.

Kaede Amakubo (CV: Wako Ichihara)
Yuri’s older sister. A sophisticated woman in contrast to Yuri. After going missing, she returned at the helm of the Empire of Logia’s invasion as one of the Four Warlords. Following a fierce battle with the ExS-TIA, she was ultimately vanquished.