About the Kiyoshi thing, only the Kiyoshi techniques that involve their chakra/energy going inside of the foe to cause damage do no harm. The ones that use chaka as brute strength can still effect us. And good, for the most part. I would give you le wallie buuuutttttt, I dont feel like typing and/or copy pasting lol.
Anywho, every Nekura has a different method, so you'll have to work out what yours is. We've already had insane laughter, ruthless ambition, and violent bloodshed. Try to feel the connection the cursed chakra has with you in your body. You do this by different methods; some Nekura feel this initially only when they have particularly viciously killed someone, myself being one of them; but everyone has their own methods to establish contact.