This is a funny and cute version of PSY's song. No animation this time, just a nice pic. Incidentally, sometimes it's written oppa, at other time oppan. Listening carefully to it all, from the PSY original to this version, one gets the impression that the 'n' is just about there, in much the same way as it is (for slightly different reasons) at the end of some Japanese words and the Japanese pronunciations of our words.
This version by Lapis Aoki is a bit like Marmite, in that you almost certainly either love it or hate it. I don't think there's much if any middle ground here! The general opinion seems to be positive, so it's definitely worth having on my 'blog.
I eventually lost count of how many 'cute' and 'adorable' comments there are at the YouTube page (accessed as always via the YouTube button on the player when it's active) but it must have been somewhere around a hundred, with a few 'kawaii' as well. It took me a long time to skim-read them all, carefully discounting the blocks of duplicates (a YouTube bug that I encounter frequently).
The only oddity is that, strictly speaking, the song is written from a male perspective, admiring a shy lady. Then again, if it works for SeeU (as we know it does), there's no reason why Lapis can't do it too...