Alongside his older brother Carla, Shin is one of the last two remaining members of the founders' bloodline also called 'First Blood'. Normally his speech is polite, but when he loses his temper his words turn violent and often contain hurtful or insensitive remarks. Shin usually follows the orders of his older brother Carla who he fears and respects, however, he is often too hotheaded and rushes into action while his brother prefers to think before acting.