Tendou Kei

Tendou Kei Tendou Kei (天童ケイ, Tendou Kei) is one of the students studying in Millennium Science School who wields a Railgun. She plays a major role in the Decagrammaton volume, gaining a humanoid form in the process. She eventually joins the Super Phenomenon Task Force, though spends most of her time with the Game Development Department.An AI who initially resided within Tendou Alice, "Princess" (王女) of the Nameless Gods, now as a Paranormal Affairs Department member. Her purpose was to "lead the Princess to her throne" and bring Kivotos to its end, but her priority is to keep the Princess safe, even if it meant sacrificing herself. Kei initially presented as an AI program concerned only with "guiding the Princess to her throne" and enacting the destruction of Kivotos and the genocide of its people through the construction of the Ark of Atra-Hasis. Ever since her Princess decided she wanted to be a hero instead, Kei prioritizes Alice's safety above all, sacrificing herself to keep her alive before being reborn through the assistance of Rio and Himari. Ever since, Kei has begun developing more emotions, displaying a somewhat caustic personality towards the rest of the Game Development Department and some tsundere tendencies. She has also become very hot-headed, to the point where members of the SPTF acknowledge her constant anger. However, beyond everything, her will to live on has grown stronger than ever. She considers the capabilities of Decagrammaton and its prophets to be barely a fraction of what her creators could do.Much like Alice, she also makes use of a railgun. However, Kei's model was designed by Rio alongside Himari and is a modernized version of Sword of Light. The weapon is predominantly black and white in coloration with some pink highlights, and bears a longer, spear-like appearance.It's "core" is colored yellow.