Excellent.
Fun fact: in the light novel, it is detailed that Yuki didn't heal the necromancer before putting him in chains and did the exact opposite, so the skin and muscle grew upon the chains, embedding them in his flesh. The governor was not very amused.
Not unless you are on the receiving end.
Or its body is made of molten metal
Really just try to avoid male dragons if possible.
They tend to be assholes anyway.