I liked the OP theme better. I can understand the choice of ED, and appreciate how it fits with the story, but I guess it's a matter of personal preference. The OP was light pop but it was catchy, and it had this nostalgic, melancholy feeling to it.
PS. WTF naked apron? Poor Misaki... x_X
http://www.kadokawa.co.jp/hikky/index.php?cnts=event
He's wearing the wrong side out anyhow. :3