 In the ravian exodus which followed the great war, Kirin was turned into stone and left behind as he could not pass through the ravian portal due to his mixed half-rakshas nature.When Kirin is discovered and woken up by Spikes, he considers himself human and it is only later that he starts suspecting his ravian origins.Later on, when Dahn Gem tells him of his true nature as half-rakshas and half-ravian, he realises that he has to come to terms with himself and his responsibilities.