Name: Lyudmila Ivanova Age: 17 TSF: Cherminator Rank: Second Lieutenant Formerly of the Soviet Army. An artificial ESP user from Alternative 3, she intuitively senses the emotions of those around her. As a result, she rarely expresses her own will and appears cool at first glance, but in reality, she is simply poor at expressing emotions. After joining the UN forces, she was invited by Guest to join his squad. It is no exaggeration to say that her reason for living now is her squad mates, and she often loses her composure when they are in danger.

Name: Kanade Shido Age: 18 TSF: Shiranui Type-1C Rank: Second Lieutenant Guest's childhood friend. She joined Guest's squad after entering the UN forces. She is remarkably composed for her age, but has a side that can't resist cute things. Additionally, she harbors feelings beyond friendship for her childhood friend, Guest.

Name: Emilia Müller Age: 20 TSF: Typhoon Rank: Second Lieutenant Formerly of the German Army, but after various twists and turns, she joined the UN forces and entered Guest's squad. She has not given up on reclaiming her homeland and occasionally fights recklessly. She treasures the members of her squad like family.

Name: Yui Takamura Age: 17 TSF: Takemikazuchi Type-F (Yellow) Rank: First Lieutenant Commander of the White Fangs squadron, Imperial Royal Guard. She is also the development supervisor for the XFJ Project. Her life, along with Kazusa's, was saved by Guest during the defense of Kyoto, and they have been close ever since. After many trials at Yukon Base, she completed the Shiranui Second. She has a vague inkling that Yuuya is her half-brother. As the heiress to the Takamura family, a prominent samurai house, she is called "Princess Yui" by some.

Name: Kazusa Yamashiro Age: 17 TSF: Takemikazuchi Type-A Rank: Second Lieutenant Yui's classmate and best friend, who was supposed to have died in the defense of Kyoto in other timelines. She was saved by Yui and Guest just as she was about to be devoured by a Tank-class. Since then, her bond with Yui has deepened, and she serves as the vice-commander of the White Fangs, supporting her. She is the heiress to the Yamashiro family, an outer samurai house.

Name: Akane Suzumiya Age: 18 TSF: Shiranui Second Rank: Second Lieutenant She is attached to Guest, who saved the life of Takayuki—the man loved by her sister Haruka and her respected senior Mitsuki. Following in the footsteps of Haruka and Mitsuki, she joined the UN forces and was assigned to the Isumi Valkyries. Incidentally, she seems frustrated by the indecisive relationship between Takayuki, Haruka, and Mitsuki.

Name: Marimo Jinguuji Age: 25 TSF: Kagerou Rank: Major Commander of the A-01 Regiment and Takeru's former superior, she now also trains successors at Yokohama Base. She met Guest during Operation Guangzhou on the continent and has been close with him since. In the Alternative timeline, she was a Sergeant serving as an instructor, but in this world, she remains on active duty. She is one of the few people who knows that Guest and Takeru possess memories of other timelines. She is also a friend of Dr. Yuuko Kouzuki, the deputy commander of Yokohama Base.

Name: Sumika Kagami Age: 18 TSF: Shiranui Second Rank: Second Lieutenant Takeru Shirogane's childhood friend who harbors feelings for him. In this world, Sumika was not captured by the BETA and is alive. Following Takeru, she joined the UN forces and was assigned to the Isumi Valkyries. Because Sumika is alive in this world, the brain used for the 00 Unit belongs to an unknown someone else. Consequently, she cannot pilot the Susanoo in this world.

Name: Takeru Shirogane Age: 18 TSF: Shiranui Second Rank: Second Lieutenant The original Takeru of this world, unlike other timelines. He is childhood friends with Sumika, and for now, they have a mutual unrequited crush. However, he has inherited fragmentary memories of other timelines. To avoid the worst future and "protect Earth and all humanity," he joined the UN forces three years ago, gained combat experience under Marimo on the continent, and joined the Isumi Valkyries upon returning home. Due to his knowledge of other worlds and extensive combat experience, he possesses extremely high piloting skills and courage. He is close friends with Guest, as they both possess knowledge of the future from other worlds.

Name: Yuuya Bridges Age: 22 TSF: Shiranui Second Phase 3 Test pilot for the Shiranui Second in the XFJ Project. After various struggles, he overcame his prejudices against Japanese people and Yui, growing as a person. Through various combat experiences, he has grown further, becoming an ace pilot in both name and reality. He comes to Yokohama Base with Yui. He is unaware that Yui is his half-sister and has a good relationship with Cryska.