The World's peace restored once again after Marina (ExS-TIA) and Riesz (ExS-TIA Chevalier) defeat Garzom. After that, in the spring break, Marina and Riesz go on overseas school trip. However, Souma could not go because he need to attend supplementary class for the bad results in his final test. While Marina and Riesz gone overseas, Jinevra revived as Jinevra Ω seeking for revenge against ExS-TIA and start the invasion again. Souma then ask Azarin, who get ExS-TIA power, to fight together against this new threat as ExS-TIA Magica.

Peace has returned once again after resurrected Jinevra was defeated. Riesz goes to visit to her hometown in the other world to check it out after returning from her trip. Meanwhile, Marina and Souma enjoy their lives as lovers as peaceful days return. However, the monsters appear once again. Then, Katsuragi Marina transforms into ExS-TIA once more and defeats the monsters. Marina and Souma continue fighting to protect everyone. Suddenly, another of the Four General, Naiolo, appears before them. Despite countless battles and accumulated growth, ExS-TIA is at mercy of Naiolo's overwhelming power. With the power from her bond with Souma, Marina somehow manages to hold out. How will ExS-TIA fight against the new formidable enemy? The curtain of another battle has risen yet again. [Translated from [url=https://www.dlsite.com/pro/work/=/product_id/VJ013862.html/?locale=ja_JP]DLsite[/url]]

One night, Shihou Souma and his childhood friend Katsuragi Marina are walking in a park after school, when human-like monsters suddenly appear. These monsters, seeming to come from another world, start attacking and raping people, to absorb magical power from them. In this chaotic situation, Amakubo Yuri, Souma's school infirmary doctor, shows up and givs ExS-Device to Marina. Using the device Marina transforms into ExS-TIA and fights the monsters. [Translated from [url=http://lusterise.nexton-net.jp/product/exs-tia/intro_story.html]official site[/url]]

Katsuragi Marina meets a familiar named Aramaki by accident and transform into Magical Girl Pastel Marie☆彡! As Magical Girl, she has to close Dimension Hole that occasionally occur. The Dimension Hole release miasma that turns people into monsters! Will Marina defeat all the monsters and close the Dimension Hole safely? The battle that must kept secret to the world begins! This independent work developed from the "Heroine become Magical Girl" scene in the original Kouyoku Senki ExS-Tia 3 work. Instead of the SF transformation from the original ExS-Tia works, this work give the heroine doing her activity with frilly uniform, enjoy as you watch her erotic scene when defeated. [Translated from [url=http://lusterise.nexton-net.jp/product/exs-tia_para/ep01/]official site[/url]]

Years after the battle with Naiolo ended, strange news has reach Amakubo Yuri, the developer of ExS-TIA System. It's about someone who looks like Amakubo Kaede, her older sister whom she once fought and suppose to be dead, has been seen on a remote island. To ensure the truth, Yuri contacting Souma and depart together to the island immediately! Story about Yuri, ExS-TIA heroine who doesn't has a single side episode, has been made. Story of Yuri and Kaede that more or less has been conclude in ExS-Tia 3 but you want to see more, also enjoyable to be played as the sequel to the original works. [Translated from [url=http://lusterise.nexton-net.jp/product/exs-tia_para/ep02/]official site[/url]]

When ExS-TIAs was in the verge of defeated by Naiolo, Shihou Souma activate ExS-TIA System and defeat Naiolo. However, due to the system feedback, Souma's body become a woman. And now, while Marina and the others can't fight, Souma has to fight the remaining monsters left in their place. This will become an alternate story of the second half ExS-Tia 3. After everyone's defeat, what if Souma turn into woman and fight... That kind of situation now can be enjoyed. [Translated from [url=http://lusterise.nexton-net.jp/product/exs-tia_para/ep03/]official site[/url]]