I enjoyed this story. I laughed so hard at some points. Luna is hilarious. She's still batty, but so forward and commanding. The friends with benefits thing she has going with Ron and Hermione must be giving her new confidence. The way they take over Snape's house and plan everything is amusing.
Clueless!Harry has to be one of my favorite kinks. I love that he just jumped in to help without really knowing what he was doing. The consequences, while seemingly dire, were enjoyable to all.
The end was great. While Snape kept repeating that he didn't love Harry, I got the feeling he was saying that to remind himself not to fall in love. As if he kept protesting, it wouldn't happen in the future. Well done.