@mercy_: You already know how this turns out. I told you yesterday, part of it.
Training with the Impero in that other realm, as her final test as the last student, Shiho was required to defeat him, and kill him. She emerged alone, and immediately all the Kejijo knew what happened. That's why no one's seen or heard from him since.
Before the president started his more shady, overtly sinister dealings, foreseeing a possible problem, he tricked Lady Liberty by giving her an assignment. Upon her arrival at said assignment, she was placed in a deep stasis. That's why no one has seen her in such a long time.
In addition to a great many other humans and things, Malicia has parts of Lady Liberty's DNA inside her.