At only three episodes, this OAV series (based on the manga "Boku no Marii") is sadly incomplete. The premise is an old one with the nice nerd guy ending up with an android babe, this time one he created. Since Hiroshi is in love with Marie-san but can't work up the courage to ask her out on a date, he builds Marie who looks exactly like Marie-san, save for her hair color. Hiroshi explains Marie is his sister (and she helps by always addressing him as "oniichan" -- big brother) so the potentially sticky issue of Marie-san privacy being violated is avoided.
The first episode sets the stage, then has Marie win a bet so that Hiroshi can go on a date with Marie-san. The second episode deals with a gangster high school girl who suddenly falls for Hiroshi. The third and final episode deals with Marie being given dream software and experiencing dreams for the first time. It was a really well-done episode and the dreams were actually like dreams rather than another reality. Marie's desires and fears are explored as she dreams and it was quite enjoyable.
As I stated, the problem is that the series is incomplete. There is no resolution to any of the threads laid out. I would have enjoyed seeing Hiroshi deal with his love for Marie-san, while dealing with Hibiki's love AND the potential romantic love of Marie as well. I guess I'll have to score the original Japanese manga to get the full story.
DVD-wise, again, I scold ADV for turning "-chan", "-kun", and "-san" into "Mister" or "Miss" in the subtitles. *sigh* Our honorifics aren't the same as theirs (similar, maybe) and since this IS a Japanese title which takes place in Japan, the honorifics should be left in. Otherwise, I detected no obvious translation errors, so they do get kudos there.
Bottom line: if you enjoy the android babe hooks up with nerdy nice guy genre, you should enjoy this as well, despite it being incomplete.