Yup, true that. I went for doubles instantly and after sometime, save file got corrupted. So, I chose singles for the heck of it. I hope it doesn't do much of a difference for the relationship points coz I want to keep good rept with all characters.
Oh, amaria gets more friendship points if you battle her in doubles? I didn't know that.... I try that too, with few exceptions. Fern and Titania that is...