Ten to one, Ayame is Shun and Ruri's daughter. Though considering it takes place 32 years after the TV series, it means they waited a while.
The only original Gate Keepers characters that seem to be in it are Kageyama and Yukino-chan. Yukino-chan looks the same, but Kageyama has certainly grown up. I want to know what the heck he is up to, cause I refuse to believe he's turned over a new leaf. It looks as if, again, almost all the Gate Keepers are women. Sigh. ^_^;
Anyway, I look forward to more. Too bad OVAs take so long to release. ;_; It's supposed to be 6 episodes.