I enjoyed it...probably not as fanboy as Serenade but I still enjoyed it.
I can't remember, but I swear that the whole "Jin thinking perverted things" wasn't in the manga. But whatever, this part of the episode actually worked
Nagi's voice actor Haruka Tomatsu was just perfect for the role. I completely love the accent and ancient like speech, fitting for a tree goddess.
Then there is the slapstick humor and such. I think this is shaping out to be a great series if it follows on from the manga closely.
The OP also caught my attention as being weird...but in a good way! Nagi the pop idol
