I have a Sci-Fi J-Drama for you about a love triangle between a woman, her boss... and her robot. It is one of the few J-Dramas that has ever made me laugh and cry. It is Zettai Kareshi (Absolute/Perfect Boyfriend) and the episodes are like 45 minutes long (I think), so it's best to space it out over a week or so.
(the special is AFTER the last episode) link
It's on the softer side of SF for things like the happiness sensor, but it's actually somewhat harder SF for machines with components that function similarly to how our brains do (actually theoretical Computer Science states that we ARE biological machines blah blah blah).
There is a manga version of it as well, but I have never read the manga.
Anyway, this is a romantic comedy I once cited for a Human Computer Interaction class (an online homework discussion/debate regarding the capabilities of sensors and activity recognition, but I still cited it). Also it is my current all time favorite J-Drama, so please consider it!