I loved Fou Lu's story in 4. Wonderful aside to the game and quite touching. I found the characters much more endearing in general than in 3, even if it did have a somewhat better battle system.
Though, I remember being confused when the title first came out, and little stupid me was confused with them calling the girl Mami. I always thought, like "a mammy
?" The rag on the head of both of them didn't help how I saw the mammy type. I kicked myself for it later.
It doesn't suck. :)
And that's actually quite a feat given recent offerings in console RPGs :P
Yeah, that's why I found saying that was especially important.