The feeling of the skin and sense of touch may be impossible to share as expected, but it’s a good ability since it’s so convenient, even I think it’s foul play.
It’s not a kind of ability that could be demonstrated immediately, give it enough time to multiply and its usefulness would be shown. It can be used to gather intelligence or to determine the battle strength easily.
The materials seems to be my blood, though it’s easy to replenish it since I can suck blood from others.
To end it on a good note, I went hunting and ate animals such as Demon Spider, Argiope and the Triple-Horned Horse.