Forget my previous post.
Here is the transcription of Kimi ni Todoke’s OP: Kimi ni Todoke (duh)
It’s pretty short for the TV version.
Anyway, I tried to transcribe this as easy as possible, but it still sounds pretty good on the piano.
Kimi ni Todoke OP Piano music sheet: Kimi ni Todoke (midi + pdf) (difficulty level 3)