I am sorry for this delayed reply to your gardening question. We are transitioning to a new Q&A system and your question was unfortunately lost in the transition. I have discovered it now and hope this reply is not too late to be of help.
I have searched for a Japanese Lilac that fits your description and found none. The only thing that partly fits your description that comes to mind is a Japanese snowbell (Styrax japonica), but it's foliage is not velvety and the blooms are not that fragrant. There is more info on this plant at the following website:
Thanks for the question. Please stop in again soon!
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