鋼 麻菜

Mana is introduced to us as Seigi's little sister. Unlike her brother, she attends a private academy, and thus doesn't see our protagonist very much. While Seigi goes out of his way to do things for her, she often comments at how he overdoes things and shouldn't be wasting his time.

Mana's route reveals that she and Seigi are actually two halves of what is known as the Shikou Engine (loosely translatable as "Genesis Engine"), and when whole symbolize the very essence of hope (as in the ray of light that came out of Pandora's box). The engine's two components took the form of a boy and a girl who decided to create a world. Because both carried half of the engine's energies, the boy gave up his half to the girl (Mana), making himself the "mortal" focal point of the world they created, while the girl would be something like a supervisor or overseer.

It is because of this power that Mana took on the alias of Adelheid, Grizeldis' Auxiliary Computer and Seigi's virtual companion./