The protagonist's childhood friend who transforms using a Physical Photon (PP) Device to fight invaders.
After activating ExS-TIA system, Souma can also fight now. But due to the system feedback, he turn into woman. The Visual Novel Database Shihou Souma | vndb Kouyoku Senki ExS-Tia 3.rar
An alternate story where Souma activates the ExS-TIA system himself and, due to a feedback loop, is transformed into a woman to continue the fight. The protagonist's childhood friend who transforms using a
For more information on the franchise's history and character profiles, you can visit the Visual Novel Database (VNDB) . Shihou Souma | vndb due to a feedback loop
The game has spawned several spin-offs and parallel episodes: