Akira Nishino

Akira Nishino is the older brother of Akane Nishino.

Personality
While a brilliant man, his intellect is overweighed by his arrogance. His belief that he can control any situation, especially the tampering of unpredictable magical energy caused him to completely ignore the potential consequences of failure.

Despite claiming everything he's done was for the good of humanity, his treatment on those he used for his experiments and blatant dismissal of the harm he caused from said experiments showed that the claim was false.

Abilities
Akira is just an ordinary human with no magical powers whatsoever. However, he has shown himself to be a genius scientist by Earth standards, capable of experimenting with magic and creating the "First Knight".

Akane Nishino
Despite being siblings, the two had a tense relationship. Any familial love he had for his sister is completely non-existent as not only did he use her power to gain political advantage but also experimented on her without hesitation. When Akane went missing, Akira did not bother searching for her and instead went off to find a new test subject for his experiments.

Natsume
Akira first met 'Natsume' when Akane brought her to Messiah. Learning that she was an "Awakened" person and a mute, he took custody of her and was ecstatic to discover that she had even more magical potential than the "First Knight". While intending to experiment on her, he was killed by Yuka before he got the chance. In his final moments, Akira was shocked when Natsume got up after seemingly being killed by Yuka and looted his laboratory. Asking her about her true identity, she then introduced herself as Beta from Shadow Garden.

Mordred
While never actually meeting him while he was still alive, Akira found Mordred's severed head, which had been transported to Earth along with 'Minoru Kagenou' and 'Natsume'. Due to the head's insane magical energy, he intended to use it in his experiments by injecting Natsume with his blood. However, he was ultimately assassinated and had the head stolen from him by Yuka before he could implement his scheme.