As you might imagine, an innocent like Key gets into trouble pretty much the moment she arrives in Tokyo. Aimlessly wandering the streets, she's picked up by a 'photographer' for a 'model agency'... whose main line of business actually seems to be making adult videos. Luckily for her, she's rescued by a chance encounter with a childhood friend of hers, Sakura – who holds down three different part-time jobs but hasn't really decided what she wants to do with her life yet.

Ah, this is a really satisfying episode... so much so that you end up wishing the whole series ran at this pace. First, you've got Tsurugi being Tsurugi. Then there's Ajo trying to milk every drop he can out of Miho. (Recording singles in the ICU, anyone?) Prince Snake-Eye is doing his level best to put the fear of god into anyone who's even thinking about giving Key a try-out. And Shuichi decides now's a good time to go play private investigator in Mamio Valley (where Key and Sakura grew up). Amazingly, he actually manages to turn up a few clues about the life and death of Key's 'grandfather', Doctor Mima. And if that isn't enough action for you, Ajo craves screen time and keeps cropping up, first selecting new girl Beniko as Miho's soon-to-be replacement... and then crossing paths with Shuichi in Key's old village!

Exposition and backstories. All mysteries are revealed, the significance of the photograph found in Tomyo village, the life story of Doc, how the child Tokiko was replaced by the robot Key, the ways in which all the characters are connected, everything.