DearS (2004) IMDb
Previously rated a 2.
A flying saucer crashed on Earth, and now the attractive human-looking aliens inside are being sent out to learn about humans in homestay programs. A particular alien girl in oddly dire straits is helped by a human, and declares she is his slave.
Romantic comedy with crushingly patriarchal overtones. The final explanation as to what the aliens are is surprisingly functional. Without Neneko and the deep fear she has produced in Takeya—although it is sadly trite—it would have been total crap. It’s close enough. I am ashamed of having seen it.