Hassan is the third son of Hidj-Adil D' Sar, a rich industrial, owner of many vehicle factories, which are both military as civilian. The young man grown in the wealthiness of a family recently wealthy due to a Technologic "boom", after the exploitation of the Cerebium Ore. In spite of an ideal life, Hassan is a complexed boy. Never satisfied, it has a complex particularly about his small height, and is convinced that eat some soup will make him grow taller. Irritated by his childish and selfish attitude, his father sent him to Ranwill so that he completes his knowledge in Engineering (and grow up at the same time), with limited money.