Irwin is a half breed between demon and human. Because of this he is misunderstood by others and even misunderstands his own feelings. At a young age Irwin and Matilda hung out a lot together however those around them were skeptical because Matilda was to be a Priestess. Irwin thought that by destroying Matildas guardian spirit he could free her from her obligated fate as a priestess. However it instead she started to age very quickly. Irwin began to seclude himself in the demon world soon after and sent fairys out to find the mana sword so he could use it to destroy the world. Because to him a world that would not accept Matilda was not an ideal world.