Itsuki is a dragon human hybrid the last one alive he was born in the 10th century so he's very old but looks young since he's a dragon and basically immortal Itsuki used to be a kind hearted dragon thinking humans and dragons could be friends but by the age of 600 he realized that it was nothing but a fantasy and people always tried to kill anything they didn't understand of which is why by 1'000 he was the last dragon human hybrid alive he just slept for 40 years till he got captured by humans